[RM-12259] Pass full distro module to uninstall()

[RM-12259] Pass full distro module to uninstall()

Not having the distro modules be objects shows it's limitations
here, as there is no easy way for a module to reference itself.
Technically you could reference itself by name (e.g. have the
fedora module use ceph_deploy.hosts.fedora.packager), but that
is pretty ugly and continues to rely on global vars.

For now, just pass the full distro module instead of distro.conn
so that we can easily access distro.* attributes.

Signed-off-by: Travis Rhoden <trhoden@redhat.com>