Same rule as the matrix pair: which build a service runs is a decision of
the host that runs it, so `package` follows `enable` out of the namespace
every hive must agree on byte for byte.
Grafana already had a `deploy.grafana` block holding the datasources, the
plugin list and the socket directory, so this is the package joining
options it belongs with rather than a new namespace.
Prose: the swarm-side header listed "its package" among what stays; the
deploy-side header listed what the host decides without it. Both edited,
which is the fix — a substitution on the first alone would have left the
second silently incomplete.
`swarm-grafana.nix:219` was on the sweep list and is NOT edited: it says
what stays above is what the service is to every hive, and that stays
true once the package leaves. The stale half was the sentence after it.
Refs #3772.
0002c15dc3