'gax-google-pubsub-v1' and 'gax-google-logging-v2' wreck the 'google.protobuf' namespace

[tseaver]

/cc @bjwatson, @tbetbetbe, @rok987

The failure only shows up when things are installed via easy_install (vs. pip). The two packages each include and empty google/protobuf/__init__.py, without any namespace package declaration for it (or any purpose). When installed in a particular order via easy_install / setup.py develop, the bogus google.protobuf package ends up higher on sys.path than the real google.protobuf, and mayhem ensues.

The fix would be to just drop them from the sdists altogether.

[bjwatson]

@geigerj What do you think? This seems easy to do as part of rolling new releases of these libraries for #1979.

[geigerj]

Yes, I will do this when I release the new libraries. I will also fix googleapis/gapic-generator#239 next, which will stop us from generating these bogus packages.

[tseaver]

@geigerj that would be great, thanks!

[geigerj]

I've put up new versions of those packages without the google.protobuf package.

[tseaver]

@geigerj Thank you! I just verified that bin/easy_install gcloud-python in a fresh virtualenv pulls in gax-google-pubsub-v1 0.17.12 and gax-google-logging-v2 0.17.12, and that they do not break imports from google.protobuf.*.