Collect container logs from test-registry job

To help with debugging job errors.

Change-Id: I31bb65ee059f14603761d0fec0f8d3d5dc3344a1

test-playbooks/registry/test-registry-post.yaml

@@ -0,0 +1,26 @@
+- hosts: all
+  tasks:
+    - name: List containers
+      command: "docker ps -a --format '{{ '{{ .Names }}' }}'"
+      register: docker_containers
+      ignore_errors: true
+      become: true
+
+    - name: Create container log dir
+      file:
+        path: "{{ ansible_user_dir }}/zuul-output/logs/docker"
+        state: directory
+
+    - name: Save container logs
+      loop: "{{ docker_containers.stdout_lines | default([]) }}"
+      shell: "docker logs {{ item }} &> {{ ansible_user_dir }}/zuul-output/logs/docker/{{ item }}.txt"
+      args:
+        executable: /bin/bash
+      become: true
+
+    - name: Open container logs permissions
+      file:
+        dest: "{{ ansible_user_dir }}/zuul-output/logs/docker"
+        mode: u=rwX,g=rX,o=rX
+        recurse: yes
+      become: yes

zuul-tests.d/container-roles-jobs.yaml

@@ -15,6 +15,7 @@
       - roles/use-buildset-registry/.*
       - test-playbooks/registry/.*
     run: test-playbooks/registry/test-registry.yaml
+    post-run: test-playbooks/registry/test-registry-post.yaml
     nodeset:
       nodes:
         - name: intermediate-registry