* Update the horizon URL to the new one after doc migration
* Use https instead http
* Adjust title marker length to match the title length
Change-Id: I9c2280793bd8d6496224e36dffd479e1f3732db0
This creates the tempest plugin for horizon and duplicates
the existing horizon scenario test in tempest.
Change-Id: I9430b6cefc884ecc105e91ec19a07987aa70ef98