[pgsql] Fix auth in v14 (#7560)

toolset/databases/postgres/postgresql.conf

@@ -81,7 +81,7 @@ ssl = false                             # (change requires restart)
 #ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH'	# allowed SSL ciphers
 					# (change requires restart)
 #ssl_renegotiation_limit = 512MB	# amount of data between renegotiations
-#password_encryption = on
+password_encryption = md5
 #db_user_namespace = off
 
 # Kerberos and GSSAPI