Fix Issue #63. Fix the problem that NFHttpClient is registered with Servo monitors twice.
Merge branch 'master' of https://github.com/Netflix/ribbon into cp
Rename Servo metric names for NFHttpClient
Merge branch 'master' of https://github.com/Netflix/ribbon into cp
Merge pull request #68 from allenxwang/cp

Reopen closed but not merged pull request https://github.com/Netflix/ribbon/pull/64