HBASE-12229 NullPointerException in SnapshotTestingUtils

* Implemented the waitUntilAllRegionsOnline in HBaseTestingUtility#createTable
* Add waitFor around #isTableAvailable call that previously didn't do anything
* Remove unused byte[] hex

Signed-off-by: stack <stack@apache.org>
Add admin endpoint for updating the configuration on the regionserver

Summary: This is a follow up diff for the jira to add the functionality to update configs in an online fashion.

Test Plan: Unit test. This adds an end point on the regionserver. It just tries to call the end point and make sure the call succeeds.

Differential Revision: https://reviews.facebook.net/D24861

Signed-off-by: stack <stack@apache.org>
HBASE-12161 Add support for grant/revoke on namespaces in AccessControlClient (Srikanth Srungarapu)
HBASE-12192 Remove EventHandlerListener
HBASE-12278 Race condition in TestSecureLoadIncrementalHFilesSplitRecovery (Dima Spivak)
HBASE-12294 Fix site generation
HBASE-10082 Describe 'table' output is all on one line, could use better formatting (Srikanth Srungarapu)
HBASE-12226 TestAccessController#testPermissionList failing on master (Srikranth Srungarapu)
HBASE-12202 Support DirectByteBuffer usage in HFileBlock.
HBASE-12281 ClonedPrefixTreeCell should implement HeapSize (Ram)
HBASE-12308 Fix typo in hbase-rest profile name (Solomon Duskis)
HBASE-12286 [shell] Add server/cluster online load of configuration changes Add doc to the refguide, change command names to drop the _rs_

Signed-off-by: stack <stack@apache.org>
HBASE-12294 Addendum
HBASE-12302 VisibilityClient getAuths does not propagate remote service exception correctly (Jerry He)
HBASE-12243 HBaseFsck should auto set ignorePreCheckPermission to true if no fix option is set (Yi Deng)

Signed-off-by: Jonathan M Hsieh <jmhsieh@apache.org>
HBASE-12316 test-patch.sh (Hadoop-QA) outputs the wrong release audit warnings URL

Signed-off-by: stack <stack@apache.org>
HBASE-12249 Script to help you adhere to the patch-naming guidelines
HBASE-11915 Document and test 0.94 -> 1.0.0 update
HBASE-12307 Remove unused Imports in hbase-client and hbase-common
HBASE-12285 Builds are failing, possibly because of SUREFIRE-1091

* Reduce the logging level to WARN

Signed-off-by: stack <stack@apache.org>