Updated openstack/openstack
Project: openstack/nova  c699fbdcfa8f5b9e45d1ccdb48f242a01ec930bd

Separate isolated hosts filter unit tests

Breaks out the isolated hosts filter unit tests from
test_host_filters.py into their own test file.

Change-Id: I9b64638172e8d5e527c9d29548e3f5ba0d3d17e1