Install same version for k8s CLIs and k8s control plane services

We use kubernetes 1.9.3 to run the tests.

An experimental zuul job to run tempest on CentOS 7 is also added.

Co-Authored-By: Hunt Xu <mhuntxu@gmail.com>

Change-Id: I757684b38e754b74420ee88304e05d09231b9d58

.zuul.yaml

@@ -58,6 +58,11 @@
       # deployment to avoid tests failing of no avaliable pod.
       tempest_concurrency: 3
 
+- job:
+    name: qinling-tempest-centos7
+    parent: qinling-tempest
+    nodeset: devstack-single-node-centos-7
+
 - project:
     check:
       jobs:
@@ -67,3 +72,6 @@
     gate:
       jobs:
         - openstack-tox-lower-constraints
+    experimental:
+      jobs:
+        - qinling-tempest-centos7

tools/gate/kubeadm/funcs/common.sh

@@ -34,6 +34,7 @@ function base_install {
       initscripts \
       nmap \
       lshw \
+      screen \
       ansible
   elif [ "x$HOST_OS" == "xfedora" ]; then
     sudo dnf install -y \

tools/gate/kubeadm/playbook/deploy_k8s.yaml

@@ -11,7 +11,6 @@
       with_items:
         - python
         - unzip
-        - httpie
 
     - name: Gather facts after python installation
       setup: filter=ansible_*

tools/gate/kubeadm/playbook/roles/k8s_cli/tasks/centos.yml

@@ -6,7 +6,18 @@
     baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
     enabled: yes
     gpgcheck: yes
-    repo_gpgcheck: yes
+    # Got "repomd.xml signature could not be verified for kubernetes" on zuul
+    repo_gpgcheck: no
     gpgkey:
       - https://packages.cloud.google.com/yum/doc/yum-key.gpg
       - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
+
+- name: Install kube CLIs
+  package:
+    name: "{{ item }}"
+    state: present
+    update_cache: yes
+  with_items:
+    - kubelet-1.9.3
+    - kubectl-1.9.3
+    - kubeadm-1.9.3

tools/gate/kubeadm/playbook/roles/k8s_cli/tasks/main.yml

@@ -7,16 +7,6 @@
   when:
     ansible_pkg_mgr == 'yum'
 
-- name: Install kube CLIs
-  package:
-    name: "{{ item }}"
-    state: present
-    update_cache: yes
-  with_items:
-    - kubelet
-    - kubeadm
-    - kubectl
-
 - name: Start kubelet
   systemd:
     name: kubelet

tools/gate/kubeadm/playbook/roles/k8s_cli/tasks/ubuntu.yml

@@ -8,3 +8,13 @@
   apt_repository:
     repo: 'deb http://apt.kubernetes.io/ kubernetes-xenial main'
     state: present
+
+- name: Install kube CLIs
+  package:
+    name: "{{ item }}"
+    state: present
+    update_cache: yes
+  with_items:
+    - kubelet=1.9.3-00
+    - kubectl=1.9.3-00
+    - kubeadm=1.9.3-00