Fix to unique id per rate limit per limit group
Updated tests
Updated more tests
added burst test for 2-node rl
Made LimitKey unique across entire config, updated test
Fixing more tests
Merge branch 'B-62418-merge' of github.com:rackerlabs/repose into B-62418-merge
Added schema tests
Updated a config that I missed
Made changes in response to dkowis' comments
Merge pull request #895 from rackerlabs/B-62418-merge

Limit and Limit Group ID Changes