automatically set ownership of new files/dirs to Administrators group instead of individual user

Unit test in TestHdfsAuthorizationProvider, e.g. org.apache.hcatalog.security.TestHdfsAuthorizationProvider.testTableOps. fails to run.

Running org.apache.hcatalog.security.TestHdfsAuthorizationProvider
Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 15.799 sec <<< FAILURE! - in org.apache.hcatalog.security.TestHdfsAuthorizationProvider
testTableOps(org.apache.hcatalog.security.TestHdfsAuthorizationProvider) Time elapsed: 15.546 sec <<< FAILURE!
junit.framework.AssertionFailedError: FAILED: AuthorizationException org.apache.hadoop.security.AccessControlException: action WRITE not permitted on path pfile:/Users/xz
hou/hworks/workspace/hwx-hive-ws/hive/hcatalog/core/target/warehouse for user xzhou expected:<0> but was:<40000>
at junit.framework.Assert.fail(Assert.java:50)
at junit.framework.Assert.failNotEquals(Assert.java:287)
at junit.framework.Assert.assertEquals(Assert.java:67)
at junit.framework.Assert.assertEquals(Assert.java:199)
at org.apache.hcatalog.security.TestHdfsAuthorizationProvider.exec(TestHdfsAuthorizationProvider.java:172)
at org.apache.hcatalog.security.TestHdfsAuthorizationProvider.testTableOps(TestHdfsAuthorizationProvider.java:307)