public void setMetricsFileName(String metricsFileName) {
    this.metricsFileName = metricsFileName;
  }
Check if selection was presented in xml. We need this for proper stack inheritance, because {@link ServiceInfo#getSelection}
by default returns {@link Selection#DEFAULT}, even if no value found in metainfo.xml.

@return true, if selection not defined in metainfo.xml
ambari-server/src/main/java/org/apache/ambari/server/state/ServiceInfo.java