add PRE datacenter

vars/qgAnsiblePipeline.groovy

@@ -27,7 +27,7 @@ def call(body) {
         wrap([$class: 'BuildUser']) {
             deployUser = BUILD_USER
         }
-	if (dataCenter == "A" || dataCenter == "C") {
+	if (dataCenter == "A" || dataCenter == "C" || dataCenter == "PRE") {
 		if ( operation == "online" || operation == "offline") {
 			sh "ansible-playbook /etc/ansible/online-offline.yml -e project_name=${projectName} -e data_center=${dataCenter} -e machines=${machines} -e env=${envType} -e operation=${operation} -v"
 		}else{