Release Apache AsterixDB 0.9.1 and 0.3.1

Change-Id:I8719263e0550b0da1b715e3052e458fefca1ac8f
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1679
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@apache.org>
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml b/hyracks-fullstack/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml
index 0d460ce..6207967 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-maven-plugins</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.3.1</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/pom.xml b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/pom.xml
index 193f9e8..44277cb 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-maven-plugins</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.3.1</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <packaging>maven-plugin</packaging>
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/pom.xml b/hyracks-fullstack/hyracks/hyracks-maven-plugins/pom.xml
index fb5cb1c..8de6460 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.3.1</version>
   </parent>
 
   <licenses>