Wait for the Metastore to come up before starting HiveServer2.

Change-Id: Ic8e29efe63f6745e1ff44248657cbd7882bb16d9
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1626
Reviewed-by: Lenni Kuff <lskuff@cloudera.com>
Tested-by: jenkins