Extended crontab table to support files in /etc/cron.d/ (#2517)
Extended crontab table to support files in /etc/cron.d/ (#2517)

merge dis in 
friedbutter/osquery,hackgnar/osquery,justintime32/osquery,tburgin/osquery,tburgin/osquery,friedbutter/osquery,justintime32/osquery,PoppySeedPlehzr/osquery,pathcl/osquery,hackgnar/osquery,trizt/osquery,tburgin/osquery,justintime32/osquery,PoppySeedPlehzr/osquery,hackgnar/osquery,jacknagz/osquery,jacknagz/osquery,PoppySeedPlehzr/osquery,trizt/osquery,jedi22/osquery,jedi22/osquery,jacknagz/osquery,pathcl/osquery,trizt/osquery,pathcl/osquery,jedi22/osquery,friedbutter/osquery