`name_length` is deprecated in latest rally due to changes related to
improvement of cleanup mechanism.
Change-Id: I636dcfe8d0a05f9b621e15d5ec302f74cc6d741a
Closes-Bug: #1507752
Directory `rally-scenarios' is renamed to `rally-jobs'.
New name is required by Rally documentation, old name
`rally-scenarios' is deprecated.
Reference:
https://rally.readthedocs.org/en/latest/gates.html
Change-Id: Iee24ebc4c6cbfb8aa91ab2bb284ac44cc9598c0c