Swap calls from popen to pymongo calls if possible

[DreamingRaven]

Describe the change Things like starting and stopping the database should use pymongo now that we suspect that pymongo can start and stop mongodb. This way things can be a lot cleaner and not also require mongodb and mongodb tools etc.

Why this is desireable See above.

Example? If applicable, add an example to help explain your change.

Additional context Add any other context about the problem here.