Add count type to Agent check
Fix naming conflict
add count from counter method and add unit tests
simple refactor to make method more readable
bug fix: missing a point if only one point is submitted after the initial sample
rename methods and refactor monotonic counter to skip reset counters
Rename method to monotonic_count
Remove deprecation comments
Merge pull request #1012 from DataDog/isaac/add_count_to_agent_check

Add count type to Agent check