Prevent renaming VMware cluster as it could cause problems.

Author: GabrielBrascher

server/src/main/java/com/cloud/resource/ResourceManagerImpl.java

@@ -1039,6 +1039,9 @@ public Cluster updateCluster(UpdateClusterCmd cmd) {
         boolean doUpdate = false;
 
         if (org.apache.commons.lang.StringUtils.isNotBlank(name)) {
+            if(cluster.getHypervisorType() == HypervisorType.VMware) {
+                throw new InvalidParameterValueException(String.format("Renaming VMware cluster is not supported as it could cause a problem if the cluster on VCenter is not mapped."));
+            }
             s_logger.debug("Updating Cluster name to: " + name);
             cluster.setName(name);
             doUpdate = true;