Add template and supporting code to bootstrap Ironic node

- template added
- move environment hardware.start() to the underlay fixture

Change-Id: I00d3ef10c71b96b8143a94e96f6660e172719130
diff --git a/.gitreview b/.gitreview
index 7dfb0a5..22fa62c 100644
--- a/.gitreview
+++ b/.gitreview
@@ -1,4 +1,4 @@
 [gerrit]
-host=review.openstack.org
+host=review.gerrithub.io
 port=29418
 project=Mirantis/tcp-qa.git