Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 400ba4976a347fd8e020248da19df3be812a88dc.
diff --git a/asterix-metadata/pom.xml b/asterix-metadata/pom.xml
index 8149c5b..5252d0c 100644
--- a/asterix-metadata/pom.xml
+++ b/asterix-metadata/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>asterix</artifactId>
 		<groupId>org.apache.asterix</groupId>
-		<version>0.8.8-SNAPSHOT</version>
+		<version>0.8.7-incubating</version>
 	</parent>
 	<artifactId>asterix-metadata</artifactId>
 
@@ -53,25 +53,25 @@
 		<dependency>
 			<groupId>org.apache.asterix</groupId>
 			<artifactId>asterix-common</artifactId>
-			<version>0.8.8-SNAPSHOT</version>
+			<version>0.8.7-incubating</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.asterix</groupId>
 			<artifactId>asterix-om</artifactId>
-			<version>0.8.8-SNAPSHOT</version>
+			<version>0.8.7-incubating</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.asterix</groupId>
 			<artifactId>asterix-runtime</artifactId>
-			<version>0.8.8-SNAPSHOT</version>
+			<version>0.8.7-incubating</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.asterix</groupId>
 			<artifactId>asterix-events</artifactId>
-			<version>0.8.8-SNAPSHOT</version>
+			<version>0.8.7-incubating</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>