Sets __address__ rewrite to not look for an optional port number, since it was removed from the targets generated by mlabconfig.py in the operator repo.
Sets __address__ rewrite to not look for an optional port number, since it was removed from the targets generated by mlabconfig.py in the operator repo.

stephen-soltesz/prometheus-support,stephen-soltesz/prometheus-support,stephen-soltesz/prometheus-support