private ResolvedKerberosKeytab fromKeytabEntity(KerberosKeytabEntity kke) {
    return fromKeytabEntity(kke, true, false);
  }
This function split serviceComponentFilter to two filters, one with specific components, and another one with service
only. Can return only one filter if filter contain only one type of mapping(whole service or component based)
or empty filter if no serviceComponentFilter provided.

@param serviceComponentFilter
@return
ambari-server/src/main/java/org/apache/ambari/server/serveraction/kerberos/stageutils/KerberosKeytabController.java