This should fix integration tests running on clusters that don't have
visible controller manager pods (e.g., GKE). Pinniped should boot, not
find any controller manager pods, but still post a status in the CIC.
I also updated a test helper so that we could tell the difference
between when an event was not added and when an event was added with
an empty key.
Signed-off-by: Andrew Keesler <akeesler@vmware.com>