Bring in webmock and bandaid some failures.

There are a few specs failing under Webmock's default behavior of
disallowing any network requests in your specs. Those have been flagged
with a special (and probably temporary) metadata that allows the
requests to go through.
Merge pull request #234 from CenturyLinkLabs/chore/webmock

Bring in webmock and bandaid some failures.