Add shell scripts for mvn:release

The scripts launch mvn:release in batch mode (no interaction).
The version are sourced from the release-versions.txt file.
It should be updated and commited before doing a release.

Author: acogoluegnes

create-tag-dry-run.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+set -x
+
+source "release-versions.txt"
+
+mvn release:clean release:prepare -DdryRun=true -Darguments="-DskipTests" \
+				  --batch-mode -Dtag="v$RELEASE_VERSION" \
+					       -DreleaseVersion=$RELEASE_VERSION \
+					       -DdevelopmentVersion=$DEVELOPMENT_VERSION

create-tag.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+set -x
+
+source "release-versions.txt"
+
+mvn release:clean release:prepare -Darguments="-DskipTests" \
+				  --batch-mode -Dtag="v$RELEASE_VERSION" \
+					       -DreleaseVersion=$RELEASE_VERSION \
+					       -DdevelopmentVersion=$DEVELOPMENT_VERSION

release-versions.txt

@@ -0,0 +1,2 @@
+RELEASE_VERSION="4.0.4"
+DEVELOPMENT_VERSION="4.0.5-SNAPSHOT"