bundles/postgresql: do a database dump before backing up the database

bundles/postgresql/metadata.py

@@ -2,6 +2,9 @@ defaults = {
     'backups': {
         'paths': {
             '/var/lib/postgresql',
+
+            # FIXME
+            '/var/tmp/postgresdumps',
         },
     },
     'icinga2_api': {
@@ -32,6 +35,9 @@ if node.has_bundle('zfs'):
             },
         },
     }
+# FIXME
+#else:
+#    defaults['backups']['paths'].add('/var/tmp/postgresdumps')
 
 
 @metadata_reactor.provides(