Double slash http path request output filter
Double slash http path request output filter

Some cases the endpoints are defined without tailing slash,
some cases with, it can cause at the end the config script sends
confusing paths in the get requests.

Ensure the config script does not sends double slash.

Change-Id: Icfedfd26842764fe616356b80aae829659c0b9bc

eggmaster/tempest,danielmellado/tempest,danielmellado/tempest,eggmaster/tempest