Updated openstack/openstack
Project: openstack/ceilometer  3fbeab2042c0d29c0761464ffe3e33f4fae01bb2

Transform sample_cnt type to int

Duration is seconds from current time, and sample_cnt on
the basis of duration. So sample_cnt always not a int, but
we need sample_cnt as a int type.

Closes-Bug:#1330330

Change-Id: I89e1768523384e24c3a0b8b76f4fa04a123248f9