Log (dis)connections to PostgreSQL

Configure PostgreSQL to log all successful client connections
(log_connectsions = on) and all events related to disconnections of the
client (log_disconnections = on).

Author: lpiwowar

internal/controller/assets/postgres.conf

@@ -7,3 +7,5 @@ ssl_key_file = '/etc/certs/tls.key'
 # (sslcert/sslkey) to PostgreSQL, so ssl_ca_file has no effect (even when pg_hba.conf
 # is correctly configured for mTLS)
 # ssl_ca_file = '<none>'
+log_connections = on
+log_disconnections = on