IMPALA-11249: Fix add_test_dimensions() locations to call super()

The original issue is that the strict HS2 shell tests
are not running in precommit or nightly jobs, but they
do run in local developer environments. Investigating
this showed that the shell tests were running with a
weird set of test dimensions that includes
table_format_and_file_extension. That dimension is only
used in test_insert.py::TestInsertFileExtension.

What is happening is that the shell tests and other
locations are running add_test_dimensions() without
calling super(..., cls).add_test_dimensions(). The
behavior is unclear, but there is clearly cross-talk
between the different tests that do this.

This changes all add_test_dimensions() locations to
call super(..., cls).add_test_dimensions() if they
don't already. Each location has been tuned to run
the same set of tests as before (except the shell
tests which now run the strict HS2 tests).

As part of this, several shell tests need to be
skipped or fixed for strict HS2.

Testing:
 - Ran core job
 - Ran tests locally to verify the set of tests
   didn't change.

Change-Id: Ib20fd479d3b91ed0ed89a0bc5623cd2a5a458614
Reviewed-on: http://gerrit.cloudera.org:8080/18557
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

tests/custom_cluster/test_client_ssl.py

@@ -140,6 +140,7 @@ class TestClientSsl(CustomClusterTestSuite):
 
   @classmethod
   def add_test_dimensions(cls):
+    super(TestClientSsl, cls).add_test_dimensions()
     cls.ImpalaTestMatrix.add_dimension(create_client_protocol_dimension())
 
   @pytest.mark.execute_serially