The aforementioned contains many utilities beyond the eventlet-based
server, which are used across OpenStack. While these utilities should
arguably have never been added to oslo.service and would be better
placed in another service (e.g. an oslo.wsgi library), the reality is
that they are here now and we're can't deprecate them until that move
happens.
Remove the module deprecation, and instead deprecate the class.
Change-Id: I6e8e7b3a44ca06488cf87631de3a5526f7c8496c
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>