Revert "[maven-release-plugin] prepare release apache-hyracks-0.2.18"

This reverts commit e6af0eee8f27019c7cf2114e66572543bbe84d18.
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
index fbd07cc..1cec310 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks.examples</groupId>
     <artifactId>btree-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml
index 51a7e22..991556f 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks.examples</groupId>
     <artifactId>btree-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml
index b3fa945..881fd1a 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks.examples</groupId>
     <artifactId>btree-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/pom.xml
index c9df02b..1b669e6 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
index 4688ff7..d294c11 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/hyracks-shutdown-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/hyracks-shutdown-test/pom.xml
index 502b0eb..aafbbe4 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/hyracks-shutdown-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/hyracks-shutdown-test/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/pom.xml
index 0d28929..b60a2c1 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <licenses>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/text-example/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/text-example/pom.xml
index c0e1a75..36e44ad 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/text-example/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/text-example/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/text-example/textclient/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/text-example/textclient/pom.xml
index 4d900f4..fcb5b8e 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/text-example/textclient/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/text-example/textclient/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>text-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/text-example/texthelper/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/text-example/texthelper/pom.xml
index 82b236a..1792650 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/text-example/texthelper/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/text-example/texthelper/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>text-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/text-example/textserver/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/text-example/textserver/pom.xml
index 51c6419..07e64c1 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/text-example/textserver/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/text-example/textserver/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>text-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/pom.xml
index bbecd31..4103b66 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
index ec80d09..59f54a0 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>tpch-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml b/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml
index aa092a7..b967e85 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>tpch-example</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>