Change 461736 modifies the url passed to oauth signature verifier to
request url. But in some deployments, https endpoints are terminated
at haproxy and http request is sent to keystone. So request url will
have http as url scheme whereas the endpoint is registered with https
and signature at client is done with https url. This results in OAUTH
signature validation failure.
Update URL sent for OAUTH signature verification with the scheme of
the base url.
Change-Id: Iaba285985b616a35e3dfe33cdd45667174e7c69d
Partial-Bug: #1687593
b7aece57d2