infra/ansible-provision.yaml (ch11l007) doesn't work AFAICT

When I got to ch11|007 it didn't run the first time.  I fixed it by moving the migrate container to after the container is started.  I guess you could also do a run of ./manage.py migrate rather than an exec.  I didn't want to have all those repeated parameters, ansible is kinda a PItA in that way.