1153344 - Allow Mongo connections over SSL.

https://bugzilla.redhat.com/show_bug.cgi?id=1153344
Merge branch '1153344' into 2.5-testing
Merge branch '2.5-testing' into 2.5-dev

Conflicts:
	server/pulp/server/db/connection.py
Merge branch '2.5-dev'

Conflicts:
	docs/user-guide/installation.rst
	server/pulp/server/config.py
	server/pulp/server/db/connection.py