CompareFCV compares two strings as dot-delimited tuples of integers.

Initialize a user admin, using the already-connected session passed in.

Create a user with the specified password and role, using the already-connected session passed in.

GetBareSession returns an mgo.Session from the environment or from a default host and port.

GetBareSessionProvider returns a session provider from the environment or from a default host and port.

GetFCV returns the featureCompatibilityVersion string for an mgo Session or the empty string if it can't be found.