Avoid double verification of IP address (#355)
Avoid double verification of IP address (#355)

Summary:
Pull Request resolved: https://github.com/facebook/mcrouter/pull/355

Contractor will throw in case address is invalid. This way we can safe one validation.
Exception should be OK in this case.

Reviewed By: stuclar

Differential Revision: D23689585

fbshipit-source-id: 72d112f8b14f5a13d89787c0de4f6810d1d14550

facebook/mcrouter,facebook/mcrouter,facebook/mcrouter,facebook/mcrouter