All of these invocations of the bindep role are passing what amount to
the defaults. In zuul-jobs, doing bindep_dir: "{{ zuul_work_dir }}" is
important because it allows in-repo uses of those jobs to override how
they work for things like triggering from one repo but running on
another.
The publication jobs in project-config do not need that level of
flexibility, so just remove params and let defaults take over.
As a follow up, we could also add defaults for zuul_work_dir - and
honestly for bindep_dir - to the base job. That way we can always count
on them being set to a sane default value, and they're still
overrideable in a job.
Change-Id: I5bcda84aefa4726d0a904e8bc9698c21ca07f9a5
09da196701