Loosen upper limit for httplib2

[aaltay]

Current version on pypi is 0.12.3, we should be able to use patch versions in the same minor version.

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Post-Commit Tests Status (on master branch)

Lang	SDK	Apex	Dataflow	Flink	Gearpump	Samza	Spark
Go		---	---	---	---	---	---
Java
Python		---			---	---	---

Pre-Commit Tests Status (on master branch)

---	Java	Python	Go	Website
Non-portable
Portable	---		---	---

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[udim]

pip check is failing:

googledatastore 7.0.2 has requirement httplib2<=0.12.0,>=0.9.1, but you have httplib2 0.12.3

[aaltay]

Arggh :/ Nevermind in that case, unless we change googledatastore to release 7.0.3 first this PR will not work.

I will check with googledatastore if they will be willing to do such a release.

[aaltay]

Closing this for now. If googledatastore makes a new release, I can update both dependency versions. (Hopefully we will move away from googledatastore eventually.)

[udim]

Note that only the Python 2 based tests failed (docs and testPy2Gcp), because googledatastore is not a requirement in Python 3 environments. So if we really needed to we could upgrade httplib2 only for Py3.

🥇 pip check FTW. :)

[jinnovation]

@aaltay: Any news on bumping the dependency in googledatastore? My team at Twitter is looking to adopt a Beam dependent (TFX), and this specific pinned upper version limit for httplib2—as well as oauth2client—creates dependency conflict issues for us.