simplify colorized logging setup

This makes setup_colorized_logging be a thing which takes a single
parameter and doesn't let projects do things differently. It also
changes the order of values from user / project to project / user to
represent the hierachy more clearly.

Change-Id: I8c0ba7da54be588e3e068734feb4f78ed7c5a14a
diff --git a/lib/nova b/lib/nova
index 450242b..617cf5c 100644
--- a/lib/nova
+++ b/lib/nova
@@ -520,7 +520,7 @@
     fi
     # Format logging
     if [ "$LOG_COLOR" == "True" ] && [ "$SYSLOG" == "False" ] && [ "$NOVA_USE_MOD_WSGI" == "False" ]  ; then
-        setup_colorized_logging $NOVA_CONF DEFAULT
+        setup_colorized_logging $NOVA_CONF
     else
         # Show user_name and project_name instead of user_id and project_id
         iniset $NOVA_CONF DEFAULT logging_user_identity_format "%(user_name)s %(project_name)s"