We currently only have letsencrypt_test_only as a single flag that
sets tests to use the letsencrypt staging environment and also
generates a self-signed certificate.
However, for initial testing we actually want to fully generate
certificates on hosts, but using the staging environment (i.e. *not*
generate self-signed certs). Thus we need to split this option into
two, so the gate tests still use staging+self-signed, but in-progress
production hosts can just using the staging flag.
These variables are split, and graphite01.opendev.org is made to
create staging certificates.
Also remove some debugging that is no longer necessary.
Change-Id: I08959ba904f821c9408d8f363542502cd76a30a4
86c5bc2b45