CI: Use Docker proxy for pulls + Ruby fixes

For Train (due to CentOS 7) includes as well:

- sensu-client: Pin simpleidn Ruby gem

  simpleidn Ruby gem started requiring Ruby 2.2.

- monasca-grafana: Pin git Ruby gem

  fpm Ruby gem started requiring git Ruby gem
  git Ruby gem started requiring Ruby 2.3

Change-Id: I0c4d5e1ea16c6677813a334b38b3a22ad811531d
Co-Authored-By: Radosław Piliszek <radoslaw.piliszek@gmail.com>
Depends-On: https://review.opendev.org/c/openstack/kolla-ansible/+/772077
(cherry picked from commit a8c12def85)

docker/monasca/monasca-grafana/Dockerfile.j2

@@ -55,7 +55,8 @@ ARG monasca_grafana_url=https://github.com/monasca/grafana/archive/$monasca_graf
 # NPM installs itself in /usr/local/bin (the default in Ubuntu) which is not in the PATH.
 # This is forced for all distros to avoid conflicts with native packages.
 # NOTE(mgoddard): childprocess 3.0.0 and ffi 1.13.0 depend on Ruby 2.3.
-RUN gem install rake:"~>12" ffi:"<1.13.0" childprocess:"<2.0.0" fpm \
+# NOTE(yoctozepto): pinning git because fpm started requiring git and git started requiring Ruby 2.3
+RUN gem install rake:"~>12" ffi:"<1.13.0" childprocess:"<2.0.0" git:"~>1.7.0" fpm \
     && curl -sSL -o /tmp/monasca-grafana.tgz ${monasca_grafana_url} \
     && mkdir -p ${monasca_grafana_build_path} \
     && tar --strip 1 -xvf /tmp/monasca-grafana.tgz -C ${monasca_grafana_build_path} \

docker/sensu/sensu-client/Dockerfile.j2

@@ -88,7 +88,8 @@ RUN echo '{{ image_name }} not yet available for {{ base_distro }}' \
 # http://cbs.centos.org/koji/search?match=glob&type=package&terms=*sensu*
 # NOTE(hrw): whois 5.0.0 requires Ruby 2.4+ while CentOS has 2.0
 # NOTE(yoctozepto): pinning minitest for the same reason
-RUN {%if base_package_type == 'rpm' %} gem install whois:"<5" minitest:"~>5.11.3" && {% endif %} sensu-install --plugins {{ sensu_plugins | customizable('plugins') | join (',') }}
+# NOTE(yoctozepto): pinning simpleidn because it started requiring Ruby 2.2
+RUN {%if base_package_type == 'rpm' %} gem install whois:"<5" minitest:"~>5.11.3" simpleidn:"~>0.1.1" && {% endif %} sensu-install --plugins {{ sensu_plugins | customizable('plugins') | join (',') }}
 {% endblock %}
 
 {% block sensu_client_footer %}{% endblock %}

tests/playbooks/pre.yml

@@ -64,3 +64,21 @@
         name: tox
         virtualenv: "{{ ansible_user_dir }}/tox-venv"
       become: true
+
+    - name: Ensure /etc/docker exists
+      become: true
+      file:
+        path: /etc/docker
+        state: directory
+        mode: 0755
+
+    - name: Configure registry-mirror in daemon.json
+      become: true
+      copy:
+        dest: /etc/docker/daemon.json
+        content: |
+          {
+            "registry-mirrors": [
+              "http://{{ zuul_site_mirror_fqdn }}:8082/"
+            ]
+          }