Updated openstack/openstack
Project: openstack/ceilometer  4f009afbfd2369c6894eb21afa71e1ee61037693
null
1st & last sample timestamps in Resource representation

Fixes bug 1262335

Previously, the first and last sample timestamps associated
with a resource were calculated by the storage driver, but
then discarded.

Now, we include these values in the API resource representation.

Change-Id: I3cf6081e1ac1294083f6326f85dabebab0d02203
Updated openstack/openstack
Project: openstack/ceilometer  dff010263384af3c46526365eb99aec1aaa0d8ed
null
Utilizes assertIsNone and assertIsNotNone

Using assertEqual/assertNotEqual to test if an element
is or is not None is too python2.4.
Our unit testing framework supports assertIsNone and assertIsNotNone
which were created for these types of tests.

Change-Id: Ieba2d4ce5602885dc8a33a938a40f3086879b2c3