Update salt/modules/mongodb.py

Rectification of 'TypeError: port must be an instance of int' if using specified settings for Mongo.
test=True  not quite working yet.
add svn.diff function
Add test=True functionality
Remove debugging print statements
Check for non-existing target
Merge pull request #3650 from UtahDave/svn_test

Fixes #3633  Add  test=True to svn.latest, Add svn.diff
Remove unused import
Combine compound matcher tests
Clean out unused code
Stub out unreliable event test until it can be stabalized
Add test to verify loader modules
Add additional documentation for yum pkgrepo.managed calls
Merge pull request #3651 from basepi/develop

Fixes #3632 Add additional documentation for yum pkgrepo.managed calls
Fix bug in propagating [extra_]index_url args

(said bug consisting of not propagating them.)
Merge pull request #3652 from gthb/fix-virtualenv.managed-index-args

Fix bug in propagating [extra_]index_url args
Add cli examples to rvm module
Add cli example to alternatives.show_current
Don't expose sanitize_host
Add docsting to module in supervisord