CLOUDSTACK-7950: AttachIsoCmd shoud give correct messge when trying to attach vmwaretools installer iso on non supported guestvm deployed by ISO

Author: Sakshams

plugins/hypervisors/vmware/src/com/cloud/storage/resource/VmwareStorageProcessor.java

@@ -1463,10 +1463,12 @@ private Answer attachIso(DiskTO disk, boolean isAttach, String vmName) {
 
             if (isAttach) {
                 String msg = "AttachIsoCommand(attach) failed due to " + VmwareHelper.getExceptionMessage(e);
+                msg = msg + " Also check if your guest os is a supported version";
                 s_logger.error(msg, e);
                 return new AttachAnswer(msg);
             } else {
                 String msg = "AttachIsoCommand(detach) failed due to " + VmwareHelper.getExceptionMessage(e);
+                msg = msg + " Also check if your guest os is a supported version";
                 s_logger.warn(msg, e);
                 return new AttachAnswer(msg);
             }