[Reviewer: Matt] Homestead as HSS development

Fixes issues: metaswitch/crest#164, metaswitch/crest#162, metaswitch/crest#47. In conjunction with Phil's change of moving monit to upstart metaswitch/crest#148 should also be fixed. Also, included are ENTs for improved craft/syslog logs. Plus, command line tools for provisioning subscribers in the absence of Ellis.
Presumably all this is because we're using Python 2, and Python 2 doesn't have a built-in for monotonic time?  I'd strongly suggest we try moving to Python 3.  If we try it and it doesn't work, this may be the best approach, but we shouldn't pollute the statistics module with this - we should put in its own module.