Updated openstack/openstack
Project: openstack/nova  e1cf28cd5fe52386f76f748ebf23d7e144352cdd

VMware: remove Host class

The class was only used by the ESX driver which was remove in the
commit 1deb31f85a8f5d1e261b2cf1eddc537a5da7f60b.

Change-Id: I026e4c0f463e78e33592c6408d2e688c74a0714b