[Flakey Tests] TestAsyncRegionAdminApi, TestRegionMergeTransactionOnCluster fixes and debug

 hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/DeleteTableProcedure.java
  Edit of log about archiving that shows in middle of a table create;
  try to make it less disorientating.

 hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncRegionAdminApi.java
  Loosen assert. Compaction may have produced a single file only. Allow
  for this.

 hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableGetMultiThreaded.java
  Make this test less furious given it is inline w/ a bunch of unit
  tests.

 hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide3.java
  Add debug

 hbase-server/src/test/java/org/apache/hadoop/hbase/quotas/TestQuotaObserverChoreRegionReports.java
  Add wait on quota table to show up before moving forward; otherwise,
  attempt at quota setting fails.

 hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java
  Debug

 hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionMergeTransactionOnCluster.java
  Remove asserts that expected regions to still have a presence in fs
  after merge when a catalogjanitor may have cleaned up parent dirs.

 hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionReplicas.java
  Catch exception on way out and log it rather than let it fail test.

 hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestSnapshotScannerHDFSAclController.java
  Wait on acl table before proceeding.