openstack stop services function - confirmation added

Change-Id: I626eaf680c60de69faad3add934d69f9452355a7
diff --git a/src/com/mirantis/mk/Openstack.groovy b/src/com/mirantis/mk/Openstack.groovy
index 216a6f2..85f014f 100644
--- a/src/com/mirantis/mk/Openstack.groovy
+++ b/src/com/mirantis/mk/Openstack.groovy
@@ -378,29 +378,35 @@
  * @param probe single node on which to list service names
  * @param target all targeted nodes
  * @param services  lists of type of services to be stopped
+ * @param confirm enable/disable manual service stop confirmation
  * @return output of salt commands
  */
 def stopServices(env, probe, target, services=[], confirm=false) {
     def salt = new com.mirantis.mk.Salt()
+    def common = new com.mirantis.mk.Common()
     for (s in services) {
         def outputServicesStr = salt.getReturnValues(salt.cmdRun(env, "${probe}*", "service --status-all | grep ${s} | awk \'{print \$4}\'"))
-        def servicesList = outputServicesStr.tokenize("\n")
+        def servicesList = outputServicesStr.tokenize("\n").init()
         if (confirm) {
-            try {
-                input message: "Click PROCEED to stop ${servicesList}. Otherwise click ABORT to skip stopping them."
+            if (servicesList) {
+                try {
+                    input message: "Click PROCEED to stop ${servicesList}. Otherwise click ABORT to skip stopping them."
+                    for (name in servicesList) {
+                        if (!name.contains('Salt command')) {
+                            salt.runSaltProcessStep(env, "${target}*", 'service.stop', ["${name}"])
+                        }
+                    }
+                } catch (Exception er) {
+                    common.infoMsg("skipping stopping ${servicesList} services")
+                }
+            }
+        } else {
+            if (servicesList) {
                 for (name in servicesList) {
                     if (!name.contains('Salt command')) {
                         salt.runSaltProcessStep(env, "${target}*", 'service.stop', ["${name}"])
                     }
                 }
-            } catch (Exception er) {
-                common.infoMsg("skipping stopping ${servicesList} services")
-            }
-        } else {
-            for (name in servicesList) {
-                if (!name.contains('Salt command')) {
-                    salt.runSaltProcessStep(env, "${target}*", 'service.stop', ["${name}"])
-                }
             }
         }
     }