py3: add 32 new tests passing to the whitelist
Yay, we have crossed 100 in number of tests passing on Python 3. There are 662
tests in our test suite, so there is a lot more which is need to be done.
Differential Revision: https://phab.mercurial-scm.org/D1648
test-convert-git.t
test-subrepo-git.t
test-patchbomb-tls.t