private String getConfigurationGroupName(String bpName, String hostGroupName) {
    return String.format("%s:%s", bpName, hostGroupName);
  }
Get a config group name based on a bp and host group.

@param bpName        blueprint name
@param hostGroupName host group name
@return config group name
ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java