Make st2actions and st2tests packages available on PyPi

My current development workflow is basically code in PyCharm, rsync to my stackstorm host, and test there. (There's probably a better workflow using st2workroom or something that I haven't tried.) But anyway, it'd be nice to be able to write (and run) my tests locally for development. But I can't easily install these dependencies.

Workaround: Build st2tests From Source

git clone https://github.com/StackStorm/st2
cd st2/st2tests
source ~/.virtualenvs/my-awesome-new-pack
python setup.py build
python setup.py install

Issue Building st2actions from source on Mac OS X:

Collecting pyinotify<=0.10,>=0.9.5 (from -r requirements.txt (line 13))
  Downloading pyinotify-0.9.6.tar.gz (60kB)
    100% |████████████████████████████████| 61kB 8.6MB/s
    Complete output from command python setup.py egg_info:
    inotify is not available on macosx-10.10-intel

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/tmp/pip-build-TfxaiK/pyinotify/

Start by reviewing the st2tests setup.py and the st2actions packaging requirements, then compare how each package is currently built from the repository. The work is complete when both packages are published to PyPI and can be installed for local development without requiring a source checkout or stack-specific host.