pgbouncer: ignore_startup_parameters variable

[jimnydev]

Promote pgouncer ignore_startup_parameters to a variable - mostly to cover things like pgbouncer/pgbouncer#89

[vitabaks]

Hi @jimnydev !

Thanks

[jimnydev]

Thank you! Failing test doesn't look related:

fatal: [10.172.0.21]: FAILED! => {"changed": false, "dest": "/tmp/", "elapsed": 0, "gid": 0, "group": "root", "mode": "01777", "msg": "Request failed", "owner": "root", "response": "HTTP Error 403: Forbidden", "size": 4096, "state": "directory", "status_code": 403, "uid": 0, "url": "https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm"}