python/osmo-python-tests[master]: osmoutil: add pick_test() to pick unittest tests by name

[Neels Hofmeyr]

Patch Set 1:

couldn't find "Class.name" in the python unittest doc, do you have a specific pointer?
There seems to be a test name selection with the unittest.main(), but we're not using main().

What we do is

    suite = unittest.TestSuite()
    suite.addTest(unittest.TestLoader().loadTestsFromTestCase(TestVTYMGCP))
    suite.addTest(unittest.TestLoader().loadTestsFromTestCase(TestVTYNITB))
    add_bsc_test(suite, workdir)
    add_nat_test(suite, workdir)
    add_gbproxy_test(suite, workdir)
    add_sgsn_test(suite, workdir)
    res = unittest.TextTestRunner(verbosity=verbose_level, stream=sys.stdout).run(suite)

and after we have this suite there is no way to tell run() to just go for one of those.
My quickest way to get to run only testBSCreload was to ipython on it to find the private
members and drop those names I don't want from the suite object.

It's not very nice, but it works, and saves me effort to grind that bloaty API.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I92f90c334169f31920c63dd5c5ac8dac215065e6
Gerrit-PatchSet: 1
Gerrit-Project: python/osmo-python-tests
Gerrit-Branch: master
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-HasComments: No