replace mesos master use state endpoint with frameworks
replace mesos master use state endpoint with frameworks

replace the use of the /master/state endpoint with /master/frameworks
in the MesosMaster.frameworks endpoint. The interface to the two is the
same; the overhead for calling the new endpoint is lower. This commit
also reduces the cache time for the mesos master

Yelp/paasta,somic/paasta,Yelp/paasta,somic/paasta