Rename fixtures directory to job_fixtures to prepare for adding view_fixtures
directory in the following commits.
Change-Id: Ic20997cae020b542ddc22bf444fa6b92fbcae064
In code the `include_path` and defaults like `.` added to a set as opposed a list.
Resulting in that the order is machine/hashcode specific and
that user cannot make i.e. `.` to have higher precedence than
the fallbacks.
Without doing this you have to use absolute or unique paths which
might not always be possible in your .ini file.
Change-Id: I9721b168a67e799dfc19d7df951b99c0749b52e0