OZG-7324 adjust branch name: master -> main

Jenkinsfile

@@ -67,7 +67,7 @@ pipeline {
           when {
             not {
                 anyOf {
-                    branch 'master'
+                    branch 'main'
                     branch 'release'
                 }
             }
@@ -94,7 +94,7 @@ pipeline {
                     sh 'mvn --no-transfer-progress -s $MAVEN_SETTINGS -P ci-build clean install -Dmaven.wagon.http.retryHandler.count=3'
                         
                     script {
-	                    if (env.BRANCH_NAME == 'master') {
+	                    if (isMainBranch()) {
 		                    withSonarQubeEnv('sonarqube-ozg-sh'){
 		        				sh 'mvn -s $MAVEN_SETTINGS sonar:sonar'
 		                    }
@@ -143,7 +143,7 @@ pipeline {
 //         stage('Deploy FormCycle Plugin to FC-server') {
 //             when {
 //                 anyOf {
-//                     branch 'master'
+//                     branch 'main'
 //                 }
 //             }
 //
@@ -225,4 +225,8 @@ String getPomVersion(String pomFile){
     def pom = readMavenPom file: pomFile
 
     return pom.version
+}
+
+Boolean isMainBranch() {
+    return env.BRANCH_NAME == 'main'
 }
\ No newline at end of file