Add new org.osbuild.rhsm stage to configure to configure RHSM DNF
plugins. The stage currently supports only enabling / disabling the DNF
plugins. The stage's configuration schema allows extending it in the
future to configure other aspects of RHSM if needed.
The schema specifies each DNF plugin as an explicit object. The reason
is that although currently only setting of one common option (enabled)
is allowed, the 'subscription-manager' plugin's configuration actually
allows one additional plugin-specific option. The stage may support
setting it in the future, which will be easier with distinct objects for
each plugin.
Signed-off-by: Tomas Hozza <thozza@redhat.com>
f95336b39a