Add an option which allows skipping tests

CONTRIBUTING.md

@@ -203,3 +203,5 @@ The release script will:
 
 You will be guided through all the steps.
 
+You can add some maven options while executing the release script such as `-DskipTests` if you want to skip
+the tests while building the release.

release.sh

@@ -60,10 +60,10 @@ promptyn () {
 test_against_version () {
     if [ -z "$1" ]; then
         echo "Building and testing the release..."
-        mvn clean install -Prelease >> /tmp/fscrawler-${RELEASE_VERSION}.log
+        mvn clean install -Prelease ${MAVEN_OPTION} >> /tmp/fscrawler-${RELEASE_VERSION}.log
     else
         echo "Building and testing against elasticsearch $1.x..."
-        mvn clean verify -Pes-$1x >> /tmp/fscrawler-${RELEASE_VERSION}.log
+        mvn clean verify -Pes-$1x ${MAVEN_OPTION} >> /tmp/fscrawler-${RELEASE_VERSION}.log
     fi
 
     if [ $? -ne 0 ]
@@ -94,6 +94,8 @@ NEXT_VERSION_P=`increment_version ${RELEASE_VERSION}`
 
 NEXT_VERSION=$(readvalue "Enter the next snapshot version" ${NEXT_VERSION_P}-SNAPSHOT)
 
+MAVEN_OPTION=$(readvalue "Enter any maven option you want to add" "")
+
 RELEASE_BRANCH=release-${RELEASE_VERSION}
 
 echo "STARTING LOGS FOR $RELEASE_VERSION..." > /tmp/fscrawler-${RELEASE_VERSION}.log