Change the 'std' release type to 'python-server' and add a
'python-pypi' release type for deliverables that are published to
PyPI.
Separate the release job validation from the validation of release
version numbers and other settings to make the logic clearer.
Add a new function to determine the release type for a project, either
by checking the explicit value or guessing.
Update the unit tests that relied on 'std'.
Remove a unit test that tested a code path that has been removed.
Change-Id: I704ec75fec61ecb6ee379239a5fa8612cb01b426
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
9dbb30dce1