Gate: dont deploy hwe kernel by default

This PS updates the gate to not deploy the hwe kernel by default
on ubuntu nodes.

Change-Id: I2ea6ba899ad022d0203874693fd5f16dc76535e2
Signed-off-by: Pete Birley <pete@port.direct>

roles/upgrade-host/defaults/main.yml

@@ -0,0 +1,15 @@
+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ubuntu_kernel_hwe: false

roles/upgrade-host/tasks/main.yaml

@@ -13,7 +13,9 @@
 # limitations under the License.
 
 - name: Upgrade to HWE kernel on Ubuntu Hosts
-  when: ansible_distribution == 'Ubuntu'
+  when:
+    - ansible_distribution == 'Ubuntu'
+    - ubuntu_kernel_hwe == true
   block:
     - name: Deploy HWE kernel on Ubuntu Hosts
       include_role: