Added function to get prefix for secret depending on deployed branch

vars/utils.groovy

@@ -3,6 +3,16 @@ def mapBranchToEnv(branchName) {
     return branchNameToEnv[branchName]
 }
 
+def secretPrefix(branchName) {
+    def branchNameToPrefix = [
+        develop: 'DEV_',
+        qa: 'QA_',
+        demo: 'DEMO_',
+        master: '',
+    ]
+    return branchNameToPrefix[branchName]
+}
+
 def composeFileName(branchName) {
     return 'livecarta_build/compose.' + mapBranchToEnv(branchName) + '.yaml'
 }