B-45089 added log warning for Large Object Size going to Datastore for Rate Limiting and attribute to set when to start warning

Conflicts:
	project-set/services/rate-limiting-service/src/main/resources/META-INF/schema/examples/rate-limiting.cfg.xml
removing EndpointsCacheTest as this test is already written in groovy and not ready for check in in java
Merge branch 'master' of https://github.com/rackerlabs/repose into ratelimit_warn2
Merge branch 'master' of https://github.com/rackerlabs/repose into ratelimit_warn2
B-45089 added log warning for Large Object Size going to Datastore for Rate Limiting and attribute to set when to start warning
B-45089 added log warning for Large Object Size going to Datastore for Rate Limiting and attribute to set when to start warning
changed limit in configuration file
added class level comments
merging with master
Merge pull request #567 from kushala2012/ratelimit_warn2

 B-45089 added log warning for Large Object Size going to Datastore for Rate Limiting and attribute to set when to start warning