Force a state refresh after add-unit deploys charm

When adding services via (F6) the relations aren't being set due to the
current juju state being unaware of the new state. We force a refresh
of juju state in hopes that it will pick up the newly created charms
and issue a add-relation. However, it is currently flaky and needs more
refinements.

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>