under the hood, Host.ansible_facts is a postgres jsonb field which
performs match operations using the JSON containment operator (@>)
this operator _only_ works on exact matches on containment (i.e.,
"does the `ansible_distribution` jsonb value contain _this exact_ JSON
structure"):
SELECT ...
FROM main_host
WHERE ansible_facts @> '{"ansible_distribution": "centos"}'
SELECT ...
FROM main_host
WHERE ansible_facts @> '{"packages": {"dnsmasq": [{"version": 2}]}}'
postgres does _not_ expose any operator for fuzzy or lookup-based
matches with this operator, so host filter values like these don't
really make sense (postgres can't _filter_ in the way intended in these
examples):
ansible_distribution__startswith=\"Cent\"
ansible_distribution__icontains=\"CentOS\"
ansible_facts__packages__dnsmasq[]__version__startswith=\"2\"
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