WIP: Python client library for st2.

[lakshmi-kannan]

I am actually establishing overall how the new client library is going to look. I just started hacking things to satisfy my urge. Mostly not ready for review.

[manasdk]

Might be better to compose or even use a mixin for auth.

[Kami]

I would prefer to have two packages - st2client (Python client library) and st2cli (CLI which depends on the client library).

I assume you used st2pyclient name to avoid renaming and conflicts with the existing st2client package. I'm fine with doing that right, but before any code starts depending on it we should sort out the names.

[lakshmi-kannan]

I would prefer to have two packages - st2client (Python client library) and st2cli (CLI which depends on the client library).

Yes, that's the plan.

I assume you used st2pyclient name to avoid renaming and conflicts with the existing st2client package. I'm fine with doing that right, but before any code starts depending on it we should sort out the names.

Aye aye.

Development in my fork. Closing this PR. Will open a new PR in my fork.