Amend HBASE-12156 TableName cache doesn't used for once of valueOf methods (Andrey Stepachev)

Fix use of diamond operator in TestTableName, we are still using
-source 1.6 for building 0.98
HBASE-12158 TestHttpServerLifecycle.testStartedServerWithRequestLog goes zombie on occasion
HBASE-12149 TestRegionPlacement is failing undeterministically (Manukranth Kolloju)