Skip empty timers in statsd
Skip empty timers in statsd

If a timer didn't have any values reported in a given time duration it
would cause the calculations to fail. This just skips these entries and
reports no values for that time period.

dimrozakis/bucky,JoseKilo/bucky,JoseKilo/bucky,Hero1378/bucky,ewdurbin/bucky,trbs/bucky,trbs/bucky,CollabNet/puppet-bucky,CollabNet/puppet-bucky,Hero1378/bucky,CollabNet/puppet-bucky,MrSecure/bucky2,CollabNet/puppet-bucky,dimrozakis/bucky,jsiembida/bucky3,ewdurbin/bucky,MrSecure/bucky2