(bug-fix:minor) In dcs::testbed::lq_application_manager, normalize the observed performance measure wrt the target value.
(bug-fix:minor) In dcs::testbed::lq_application_manager, normalize the
observed performance measure wrt the target value.

sguazt/prometheus,sguazt/prometheus,sguazt/dcsxx-testbed,sguazt/prometheus