Logging
Modify syndic main loop to make it more responsive

Should fix:
* new_job events from the syndic masters some times take a long time to be
  returned
* saltutil.find_job commands sometimes take a long time to propagate
  through the syndic to the syndic minions.
Squash some pylint warnings
Merge pull request #10205 from mbirtwell/syndic_main_loop_develop-2

Syndic main loop develop 2