- Change the Postgres configuration to use x509 client
certs for authenticating the connections for replicating
between Patroni nodes. This is a straightforward solution
for support credential rotation for the replication user.
Password authentication is problematic due to the declartive
nature of helm charts and requiring an existing replication
connection to replicate the rotated password.
Change-Id: I0c5456a01b3a36fee8ee4c986d25c4a1d807cb77