We'd like to move from configuring uWSGI with '.wsgi' files to
configuring with module paths. Do this for all in-tree services and log
a deprecation warning for anyone still passing a path.
Note that since 'basepath foo' returns 'foo', this is effectively a
no-op for the services being converted here.
Change-Id: Ia1ad5ff160a9821ceab97ff1c24bc48cd4bf1d6f
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>