Instead of making the change just for ansible-provision.sh make the
change for all ansible runs.  Most of them don't currently have this
problem right now but I think it makes sense to make them all consistent
and not have to worry about this problem in the future.

(cherry picked from commit 8e995343)

(cherry picked from commit f361f761)

I removed this in 9ae2caa0 so it's a no-op

Upgrading to Dogwood is complicated, because we have to make two
intermediate stops along the way: once at the end of Django 1.4 to
migrate the databases using South, then to the beginning of Django 1.8
to apply --fake-initial migrations.  Then we can upgrade to the Dogwood
release that we actually want.