Move nova's api_paste_config into wsgi group

Change 0b9e378cca2be4e034ad401d71fbe4470907f93a moved the
api_paste_config from the DEFAULT group to the wsgi group
and deprecated it's usage in DEFAULT.

Change-Id: I283db638e76b986d3e728c6caf34a0b3f37fc9b6
diff --git a/lib/nova b/lib/nova
index ad72fc3..acf55cc 100644
--- a/lib/nova
+++ b/lib/nova
@@ -466,7 +466,7 @@
     if [ "$NOVA_ALLOW_MOVE_TO_SAME_HOST" == "True" ]; then
         iniset $NOVA_CONF DEFAULT allow_resize_to_same_host "True"
     fi
-    iniset $NOVA_CONF DEFAULT api_paste_config "$NOVA_API_PASTE_INI"
+    iniset $NOVA_CONF wsgi api_paste_config "$NOVA_API_PASTE_INI"
     iniset $NOVA_CONF DEFAULT rootwrap_config "$NOVA_CONF_DIR/rootwrap.conf"
     iniset $NOVA_CONF DEFAULT scheduler_driver "$SCHEDULER"
     iniset $NOVA_CONF DEFAULT scheduler_default_filters "$FILTERS"