OZG-7121 fix JenkinsFile

Jenkinsfile

@@ -24,7 +24,7 @@ pipeline {
             steps {
                 script {
                     FAILED_STAGE = env.STAGE_NAME
-                    def rootVersion = getPomVersion('pom.xml')
+                    def rootVersion = getPomVersion()
 
                     if(isReleaseBranch()){
                         if ( !(rootVersion ==~ RELEASE_REGEX)) {
@@ -50,7 +50,7 @@ pipeline {
           steps {
                 script {
                     FAILED_STAGE=env.STAGE_NAME
-                    JAR_TAG = getPomVersion('pom.xml').replace("SNAPSHOT", "${env.BRANCH_NAME}-SNAPSHOT")
+                    JAR_TAG = getPomVersion().replace("SNAPSHOT", "${env.BRANCH_NAME}-SNAPSHOT")
                 }
                 configFileProvider([configFile(fileId: 'maven-settings', variable: 'MAVEN_SETTINGS')]) {
                     sh "mvn -s $MAVEN_SETTINGS versions:set -DnewVersion=${JAR_TAG} -DprocessAllModules=true"
@@ -167,7 +167,7 @@ pipeline {
         stage ('Deploy SBOM to DependencyTrack') {
             steps {
                 script {
-                    IMAGE_TAG = buildVersionName('pom.xml')
+                    IMAGE_TAG = buildVersionName()
 
                     configFileProvider([configFile(fileId: 'maven-settings', variable: 'MAVEN_SETTINGS')]) {
                         withCredentials([string(credentialsId: 'dependency-track-api-key', variable: 'API_KEY')]) {
@@ -222,8 +222,8 @@ Boolean isReleaseBranch() {
     return env.BRANCH_NAME == 'release'
 }
 
-String getPomVersion(String pomFile){
-    def pom = readMavenPom file: pomFile
+String getPomVersion(){
+    def pom = readMavenPom file: 'pom.xml'
 
     return pom.version
 }
@@ -277,18 +277,18 @@ Void loginToDockerRepo() {
 }
 
 
-String buildVersionName(String pomFile) {
+String buildVersionName() {
     if (isReleaseBranch()) {
-        return getPomVersion(pomFile)
+        return getPomVersion()
     }
-    return "${getPomVersion(pomFile)}-${env.BRANCH_NAME}-${env.GIT_COMMIT.take(7)}".replaceAll("_", "-")
+    return "${getPomVersion()}-${env.BRANCH_NAME}-${env.GIT_COMMIT.take(7)}".replaceAll("_", "-")
 }
 
 Void tagAndPushDockerImage(String newTag){
     withCredentials([usernamePassword(credentialsId: 'jenkins-nexus-login', usernameVariable: 'USER', passwordVariable: 'PASSWORD')]) {
         sh 'docker login docker.ozg-sh.de -u ${USER} -p ${PASSWORD}'
 
-        sh "docker tag docker.ozg-sh.de/xta-test-server:${getPomVersion('pom.xml')} docker.ozg-sh.de/xta-test-server:${newTag}"
+        sh "docker tag docker.ozg-sh.de/xta-test-server:${getPomVersion()} docker.ozg-sh.de/xta-test-server:${newTag}"
         sh "docker push docker.ozg-sh.de/xta-test-server:${newTag}"
     }
 }