* c++ RateKeeper * add to files_common * use util::random_int * improve monotor_time * remove ~ratekeeper old-commit-hash: 3eef63af9b4f4a25bc4c3a0d6ad450bba9f62205
* Merge common/ and selfdrive/common * fix that * fix version * fix unit tests old-commit-hash: cb8885cffb313bea258c012c3026461a22bf8135