Gate: Deploy HWE kernel on ubuntu hosts

This PS deploys the HWE kernel on Ubuntu Hosts, which is required
for CephFS:
 * https://github.com/kubernetes-incubator/external-storage/issues/345

Change-Id: I2ebd46eadf5a4c7a857d42302f388511691ab0db

.zuul.yaml

@@ -99,6 +99,7 @@
 - job:
     name: openstack-helm-infra
     pre-run:
+      - tools/gate/playbooks/osh-infra-upgrade-host.yaml
       - tools/gate/playbooks/osh-infra-deploy-docker.yaml
       - tools/gate/playbooks/osh-infra-build.yaml
       - tools/gate/playbooks/osh-infra-pull-images.yaml

tools/gate/playbooks/osh-infra-upgrade-host.yaml

@@ -0,0 +1,39 @@
+# 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.
+
+- hosts: all
+  vars_files:
+    - vars.yaml
+  vars:
+    work_dir: "{{ zuul.project.src_dir }}/{{ zuul_osh_infra_relative_path | default('') }}"
+  gather_facts: False
+  become: yes
+  roles:
+    - deploy-python
+  tags:
+    - deploy-python
+
+- hosts: all
+  vars_files:
+    - vars.yaml
+  vars:
+    work_dir: "{{ zuul.project.src_dir }}/{{ zuul_osh_infra_relative_path | default('') }}"
+  gather_facts: True
+  become: yes
+  roles:
+    - upgrade-host
+    - start-zuul-console
+  tags:
+    - upgrade-host
+    - start-zuul-console

tools/gate/playbooks/upgrade-host/tasks/main.yaml

@@ -0,0 +1,42 @@
+# 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.
+
+- name: Upgrade to HWE kernel on Ubuntu Hosts
+  when: ansible_distribution == 'Ubuntu'
+  block:
+    - name: Deploy HWE kernel on Ubuntu Hosts
+      include_role:
+        name: deploy-package
+        tasks_from: dist
+      vars:
+        packages:
+          deb:
+            - linux-generic-hwe-16.04
+    - name: Reboot Host following kernel upgrade
+      shell: sleep 2 && reboot
+      sudo: yes
+      async: 30
+      poll: 0
+      ignore_errors: true
+      args:
+        executable: /bin/bash
+    - name: Wait for hosts to come up following reboot
+      wait_for:
+        host: '{{ hostvars[item].ansible_host }}'
+        port: 22
+        state: started
+        delay: 30
+        timeout: 120
+      with_items: '{{ play_hosts }}'
+      connection: local