disable error log enforcement

error log enforcement is a good goal, however given how long this
was off, we've got a few new errors that crept in, like the
nova-conductor race to set up topics (which shouldn't actually be
an error, as it actually is fine).

for now, let's do no harm.

Change-Id: Ic2f22afb6cd5a1ddeb858fe39b180d39d347242e