[#2064] hammer.py: ensure postgres entry in hba
Closes #2064 (closed)
It seems that the postgres user gets locked out of the database again.
https://jenkins.aws.isc.org/job/kea-dev/job/ut-extended/445
psql: FATAL: password authentication failed for user "postgres"I thought I tested this on all OSs, but apparently not. Some OSs are missing the postgres ident entry which I did not anticipate.