Refactor pelican.server logging
Refactor pelican.server logging

* Use pelican.log instead of default loggers
* Remove excessive logging (report failures if nothing matches, don't report successes)

ingwinlu/pelican,getpelican/pelican,farseerfc/pelican,iKevinY/pelican,talha131/pelican,ingwinlu/pelican,avaris/pelican,farseerfc/pelican,talha131/pelican,avaris/pelican,getpelican/pelican,iKevinY/pelican