Coverage integration into PR workflow

[Temikus]

Bringing out an item from #370 here, since this is pending Fog org action.

• Add codecov bot or give fog-google-bot permissions to display coverage
• Figure out automatic comments on PR's with coverage up/down
• Make sure master branch has coverage

[Temikus]

@geemus @plribeiro3000 I’ve requested codecov.io integration for fog-google repo. Requires org approval apparently to add their bot account.

If you think that’s too much - no worries, let me know and I'll figure something out.

We cannot use coveralls since they don’t support merged reports well and we need to do parallel testing (whole test suite takes almost 3 hours if we run sequentially).

Apologies for bothering you folks m(_ _)m

EDIT: removed the YAML instructions since we don't want the whole org to use our bot (d'oh).

[geemus]

@Temikus I believe it should be approved now, just let me know if you need anything else. Thanks!

[plribeiro3000]

👍

[Temikus]

@geemus Thank you, Sir!

[Temikus]

Looks like the bot is starting to do its' magic: #373

I'll close this out once I'm sure everything's working (this particular PR doesn't have a base due to being submitted before the bot was approved)

[icco]

This seems to be working, closing!