Remove unused containers from molecule test

These containers aren't used, so we can remove them.
That also allows us to remove all the docker prep.

We also adjust the ansible-role-requirements file to
make use of any zuul-provided sources to ensure that
depends-on works.

Depends-On: https://review.opendev.org/727968
Change-Id: I302c27f7680c3c8c04c71760bdaf3728ef1208fb

molecule/default/prepare.yml

@@ -20,18 +20,6 @@
   gather_facts: true
 
   pre_tasks:
-    - name: Check for docker cli
-      command: "command -v docker"
-      register: docker_cli
-      failed_when: false
-      changed_when: false
-
-    - name: Check for docker connection
-      command: "docker ps"
-      register: docker_ps
-      failed_when: false
-      changed_when: false
-
     - name: set basic user fact
       set_fact:
         ansible_user: "{{ lookup('env', 'USER') }}"
@@ -52,33 +40,3 @@
 
   roles:
     - role: test_deps
-    - role: ensure-docker
-      when:
-        - (docker_cli.rc != 0) or
-          (docker_ps.rc != 0)
-
-  post_tasks:
-    - name: Install docker-sdk
-      pip:
-        name: docker
-        virtualenv: "{{ ansible_user_dir }}/test-python"
-        virtualenv_site_packages: true
-
-    - name: pull an image
-      docker_image:
-        name: fedora:28
-        source: pull
-      vars:
-        ansible_python_interpreter: "{{ ansible_user_dir }}/test-python/bin/python"
-
-    - name: Create a data container
-      docker_container:
-        name: "{{ item }}"
-        image: fedora:28
-        detach: true
-        command: sleep 1d
-      with_items:
-        - docker-container1
-        - docker-container2
-      vars:
-        ansible_python_interpreter: "{{ ansible_user_dir }}/test-python/bin/python"

zuul.d/layout.yaml

@@ -39,6 +39,10 @@
       - zuul.d/playbooks/run.yml
     timeout: 1800
     voting: true
+    required-projects:
+      - name: openstack/ansible-role-openstack-operations
+      - name: openstack/ansible-config_template
+      - name: openstack/tripleo-ansible
 
 - job:
     files:

zuul.d/playbooks/pre.yml

@@ -1,7 +1,7 @@
 ---
 
 - hosts: all
-  pre_tasks:
+  tasks:
     - name: Set project path fact
       set_fact:
         tripleo_upgrade_project_path: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}"
@@ -36,7 +36,17 @@
         requirements: "{{ tripleo_upgrade_project_path }}/molecule/molecule-requirements.txt"
         virtualenv: "{{ ansible_user_dir }}/test-python"
         virtualenv_site_packages: true
-  tasks:
+
+    - name: Change role requirements to use zuul sources, if any are available
+      shell: |-
+        base_dir="{{ tripleo_upgrade_project_path.split('/')[:-3] | join('/') }}"
+        for d in $(find ${base_dir} -mindepth 3 -maxdepth 3 -printf '%P\n' -type d); do
+          sed -i "s|https://${d}|file:///${base_dir}/${d}|" molecule/ansible-role-requirements.yml
+        done
+      args:
+        chdir: "{{ tripleo_upgrade_project_path }}"
+        executable: /bin/bash
+
     - name: Get Ansible Galaxy roles
       command: >-
         {{ ansible_user_dir }}/test-python/bin/ansible-galaxy install
@@ -50,21 +60,3 @@
         {{ ansible_user_dir }}/test-python/bin/ansible-galaxy list
       environment:
         ANSIBLE_ROLES_PATH: "{{ tripleo_upgrade_project_path }}/molecule/roles.galaxy"
-
-  roles:
-    - role: ensure-docker
-  post_tasks:
-    - name: Run docker vfs setup
-      shell: |-
-        . {{ ansible_user_dir }}/test-python/bin/activate
-        . {{ tripleo_upgrade_project_path }}/molecule/ansible-test-env.rc
-        ansible-playbook -i 'localhost,' \
-                         -e tripleo_docker_enable_vfs={{ tripleo_docker_enable_vfs }} \
-                         docker-vfs-setup.yml
-      args:
-        chdir: "{{ tripleo_upgrade_project_path }}/playbooks"
-        executable: /bin/bash
-      environment:
-        ANSIBLE_ACTION_PLUGINS: "{{ tripleo_action_plugins_paths | join(':') }}"
-      when:
-        - tripleo_docker_enable_vfs is defined