Downgrade nginx module to 0.1.0

Current nginx module complains:

> Could not retrieve catalog from remote server: Error 400 on SERVER:
> $worker_connections must be an integer.

This appears to be non-trivial to fix, with the maintainer stating [1]:

> We're actually right in the middle of some major changes to this
> module, and so anything in the 0.1.x branch is probably going to be a
> bit rough for a bit. If you want/need some stability in the meantime,
> I recommend that you use v0.0.10 for the time being.

So, downgrading seems like a reasonable option for now.

[1] voxpupuli/puppet-nginx#460 (comment)