mongo db to checks.d
a few imports and closer replSetGetStatus error monitoring
check auth and comment stuffs
still have replSetInitiate issue - commit current work
typo and using se;f.assertTrue where applicable
made config a member variable in TestMongo
merge in form master
removed unneeded imports
missing import
get_hostname
using self.event now
forgot to take into account metric_name normalization in test_mongo
removing log statements - test successful
added test for old configurations
renamed tests
Merge pull request #397 from DataDog/checksd_mongo

Moving MongoDB to checks.d - fixes #387