use build number instead of commit hash for version name

Jenkinsfile

@@ -284,7 +284,7 @@ String buildVersionName(String pomFile) {
     if (isReleaseBranch()) {
         return getPomVersion(pomFile)
     }
-    return "${getPomVersion(pomFile)}-${validateBranchName(env.BRANCH_NAME)}-${env.GIT_COMMIT.take(7)}".replaceAll("_", "-")
+    return "${getPomVersion(pomFile)}-${validateBranchName(env.BRANCH_NAME)}-${env.BUILD_NUMBER}".replaceAll("_", "-")
 }
 
 Void tagAndPushDockerImage(String imageName, String newTag){