Updated openstack/openstack
Project: openstack/ceilometer  919769480de93042dc3188a63ea14c645932b1b3

Provide __repr__ for SampleFilter

Implement __repr__ for SamplerFilter, so that when we log it we get a more
useful representation printed to the screen, without having to log each
individual field.

Change-Id: I6b23531daa8541b073d27ea4efcac16af3d6a106