OZG-6923 add commitId to feature branch image tag/helm version

Jenkinsfile

@@ -100,7 +100,7 @@ pipeline {
             steps {
                 script {
                     FAILED_STAGE=env.STAGE_NAME
-                    IMAGE_TAG = generateImageTag()
+                    IMAGE_TAG = buildVersionName()
 
                     tagAndPushDockerImage(IMAGE_TAG)
 
@@ -119,7 +119,7 @@ pipeline {
             steps {
                 script {
                     FAILED_STAGE=env.STAGE_NAME
-                    HELM_CHART_VERSION = generateHelmChartVersion()
+                    HELM_CHART_VERSION = buildVersionName()
 
                     dir('token-checker-server') {
                         sh "./run_helm_test.sh"
@@ -232,16 +232,6 @@ String getPomVersion(String pomFile){
     return pom.version
 }
 
-String generateImageTag() {
-    def imageTag = "${env.BRANCH_NAME}-${getPomVersion('pom.xml')}"
-
-    if (env.BRANCH_NAME == 'master') {
-        imageTag += "-${env.GIT_COMMIT.take(7)}"
-    }
-
-    return imageTag
-}
-
 Void configureGit() {
     final email = "jenkins@ozg-sh.de"
     final name = "jenkins"
@@ -297,17 +287,22 @@ Void loginToDockerRepo() {
 
 }
 
-String generateHelmChartVersion() {
-    def chartVersion = getPomVersion('pom.xml')
-
-    if (env.BRANCH_NAME == 'master') {
-        chartVersion += "-${env.GIT_COMMIT.take(7)}"
+String validateBranchName(branchName) {
+    int maxLength = 30
+    if (branchName.length() > maxLength) {
+        String originalBranchName = branchName
+        branchName = branchName.substring(0, maxLength)
+        echo "WARNING: Branch name '${originalBranchName}' exceeded ${maxLength} characters. " +
+             "It has been truncated to '${branchName}' for deployment purposes."
     }
-    else if (env.BRANCH_NAME != 'release') {
-        chartVersion += "-${env.BRANCH_NAME}"
+    return branchName
 }
 
-    return chartVersion.replaceAll("_", "-")
+String buildVersionName() {
+    if (env.BRANCH_NAME == 'release') {
+	    return getPomVersion('pom.xml')
+    }
+    return "${getPomVersion('pom.xml')}-${validateBranchName(env.BRANCH_NAME)}-${env.GIT_COMMIT.take(7)}".replaceAll("_", "-")
 }
 
 Void tagAndPushDockerImage(String newTag){