The specs repo was previously organized into 2 dirs, one for devstack
and one for tempest. However, the qa program consists of more than just
those 2 projects. (although they are the 2 most active) There was no
place present in the repo for any specs outside of those. (or for adding
new projects) This commit adds an additional directory, other where
specs can live for those that fall outside of tempest and devstack.
Change-Id: I16821067fcb3bf7188683a8462e4a1d450f939dd