Moving setting of ansible_python_interpreter to joyent sync

so that the server doesn't have special nonsense going on.  Also removed
special handling of `?exclude-vars=` query string arg since it makes
very little sense to bypass this optimization...  I think.
Merge remote-tracking branch 'origin/master' into make-smell-less-like-joyent
Merge pull request #31 from modcloth/make-smell-less-like-joyent

Make smell less like joyent