Fix the Vagrant setup
The Vagrant setup had a few issues:
* the services are now correctly enabled when provisioning (Fixes #2647)
* installed missing deps on trollius and trollius-redis (Fixes #2749)
* fixed pagure_webhook.service to run against the right python file
(Fixes #2749)
* removed the --autoreload flag from the celery command in
pagure_worker.service, as celery removed this flag (Fixes #2749)
Signed-off-by: Ryan Lerch <rlerch@redhat.com></rlerch@redhat.com>