Statsd Batching| Allow to send several datapoints in one udp packet
Statsd Batching| Fix docstring and use some float in the tests
Merge branch 'master' into statsd_batching
Check the MongoDB connection and send the service check
Update copyright
Gather lock counts for the current db

Tag with lock mode and table name (though indices will show up here
as well).
Added an individual tag for each file which matched the pattern
Added configuration params to change the tag names (directory and file)
Expvar| Add support for wildcard to specify content to report
Expvar| Update the yanl example
Expvar | Document more deep_get function
Add MySQL service check
Add service check for SQLServer
Revert "Check the MongoDB connection and send the service check"

This reverts commit 90eaebfc713b050cdde0545093e5e7f3abdbb30b.
Merge branch 'master' into db-service-checks

Conflicts:
	checks.d/mysql.py
Add service check for MongoDB
Clean mongo check code
Add test for Mongo sc
Add test for Mysql sc
Add test for SQLServer sc
Fix Travis build for test_mongo.py