Added utility functions

vars/utils.groovy

@@ -0,0 +1,22 @@
+def mapBranchToEnv(branchName) {
+    def branchNameToEnv = [develop: 'dev', qa: 'qa', master: 'prod']
+    return branchNameToEnv[branchName]
+}
+
+def composeFileName(branchName) {
+    return 'livecarta_build/compose.' + mapBranchToEnv(branchName) + '.yaml'
+}
+
+def composeProjectName(branchName) {
+    return 'lc_' + mapBranchToEnv(branchName) + '_apps'
+}
+
+def imgTag(branchName) {
+    def tag = [develop: 'dev', qa: 'qa', master: 'prod', main: 'prod']
+    return tag[branchName]
+}
+
+def deploymentServer(branchName) {
+    def servers = [develop: 'livecarta-dev', qa: 'live-ci', master: 'livecarta-prod-web']
+    return servers[branchName]
+}