Curl: disable mqtt and make sure we don't create the completion dirs
Curl: disable mqtt and make sure we don't create the completion dirs

We end up with an empty completions dir in our install which is really annoying.

I also changed the solaris11 checks to just solaris since we don't support solaris 10 anymore.

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

chef/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,aerobase/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,chef/omnibus-software,mattray/omnibus-software,higanworks/omnibus-software,mattray/omnibus-software,higanworks/omnibus-software,chef/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,aerobase/omnibus-software,higanworks/omnibus-software,mattray/omnibus-software,higanworks/omnibus-software,mattray/omnibus-software