allow to specify drivername for postgres

to specify +drivername, puppet-oslo module
needs Change-Id: Idbac640aba8f4c87ae43df3a7019bf465895ca43
otherwise the check will fail there !

Change-Id: Id1d2764708b046ea4582306a6881104779f12a5c

manifests/db.pp

@@ -52,7 +52,7 @@ class panko::db (
   include ::panko::deps
 
   validate_re($database_connection,
-    '^(sqlite|mysql(\+pymysql)?|postgresql):\/\/(\S+:\S+@\S+\/\S+)?')
+    '^(sqlite|mysql(\+pymysql)?|postgresql(\+psycopg2)?):\/\/(\S+:\S+@\S+\/\S+)?')
 
   oslo::db { 'panko_config':
     connection     => $database_connection,

releasenotes/notes/postgres-0f2d04def1149954.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Allow to specify drivername for postgres db