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/pom.xml b/pom.xml
index 3f3b2dc..586969c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.apache</groupId>
   <artifactId>apache-asterixdb-fullstack</artifactId>
-  <version>0.9.1-SNAPSHOT</version>
+  <version>0.9.1</version>
   <packaging>pom</packaging>
   <name>hyracks-asterix</name>