[LIT] Fix failing LIT tests

Summary:
I spend some time trying to get the LIT test suite passing. Here are the changes that I needed to make on my machine.

I made the following changes for the following reasons.

1. google-test.py: The Google test format now checks for "[  PASSED  ] 1 test." to check if a test passes.
2. discovery.py: The output appears in a different order on my machine than it did in the test.
3. unittest-adaptor.py: The output appears in a different order on my machine than it did in the test.
4. The classname is now formed differently in `getJUnitXML(...)`.

I'm not sure what is causing the output order to differ in discovery.py and unittest-adaptor.py. Does anybody have any thoughts?

Reviewers: ddunbar, danalbert, jroelofs

Reviewed By: jroelofs

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9864

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239663 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/tests/Inputs/googletest-format/DummySubDir/OneTest

@@ -21,6 +21,7 @@ elif not sys.argv[1].startswith("--gtest_filter="):
 test_name = sys.argv[1].split('=',1)[1]
 if test_name == 'FirstTest.subTestA':
     print('I am subTest A, I PASS')
+    print('[  PASSED  ] 1 test.')
     sys.exit(0)
 elif test_name == 'FirstTest.subTestB':
     print('I am subTest B, I FAIL')
@@ -29,6 +30,7 @@ elif test_name == 'FirstTest.subTestB':
 elif test_name in ('ParameterizedTest/0.subTest',
                    'ParameterizedTest/1.subTest'):
     print('I am a parameterized test, I also PASS')
+    print('[  PASSED  ] 1 test.')
     sys.exit(0)
 else:
     raise SystemExit("error: invalid test name: %r" % (test_name,))