Bumping the required version of pymongo. We definitely do not work with 1.9 anymore, and we only test against 2.1.1. dgregor ran into an issue where he managed to do a fresh Pulp install with pymongo 1.9 and hit a migration error, so we definitely need to be more accurate with this requirement.
Merge branch 'mhrivnak-pymongo-req' into pulp-2.1

Conflicts:
	platform/pulp.spec