Run molecule tests locally without zuul

Adds the ability to execute molecule tests locally without relying (or
trying to fake) zuul infrastructure.

Uses environment variables to configure config_podman.yml, with default
values that can be sourced from ansible-test-env-podman.rc.

Updates the test_deps role to work without requiring the existence of a
zuul mirror file.

Updates documentation.

Change-Id: Iedcdb48ded439a2a41ace74a983e9d6eed398a94
Signed-off-by: James Slagle <jslagle@redhat.com>

.config/molecule/config_podman.yml

@@ -7,17 +7,13 @@ log: true
 platforms:
   - name: centos
     hostname: centos
-    image: ubi9/ubi-init
+    image: ${TRIPLEO_ANSIBLE_MOLECULE_IMAGE:-"ubi9/ubi-init"}
     registry:
-      url: registry.access.redhat.com
+      url: ${TRIPLEO_ANSIBLE_MOLECULE_REGISTRY:-"registry.access.redhat.com"}
     dockerfile: Dockerfile.j2
     pkg_extras: python*setuptools
-    command: /sbin/init
-    volumes:
-      - /etc/ci/mirror_info.sh:/etc/ci/mirror_info.sh:ro
-      - /etc/pki/rpm-gpg:/etc/pki/rpm-gpg:O
-      - /opt/yum.repos.d:/etc/yum.repos.d:O
-      - /etc/dnf/vars:/etc/dnf/vars:O
+    command: ${TRIPLEO_ANSIBLE_MOLECULE_COMMAND:-"/sbin/init"}
+    volumes: ${TRIPLEO_ANSIBLE_MOLECULE_VOLUMES:-['/etc/ci/mirror_info.sh:/etc/ci/mirror_info.sh:ro','/etc/pki/rpm-gpg:/etc/pki/rpm-gpg:O','/opt/yum.repos.d:/etc/yum.repos.d:O','/etc/dnf/vars:/etc/dnf/vars:O']}
     privileged: true
     environment: &env
       http_proxy: "{{ lookup('env', 'http_proxy') }}"

ansible-test-env-podman.rc

@@ -0,0 +1,4 @@
+export TRIPLEO_ANSIBLE_MOLECULE_COMMAND="/bin/sleep infinity"
+export TRIPLEO_ANSIBLE_MOLECULE_VOLUMES="[]"
+export TRIPLEO_ANSIBLE_MOLECULE_IMAGE="centos/centos:stream9"
+export TRIPLEO_ANSIBLE_MOLECULE_REGISTRY="quay.io"

doc/source/contributing_roles.rst

@@ -133,9 +133,19 @@ file from the project root, and then execute the following commands.
 
 .. code-block:: console
 
+    (test-python) $ source ansible-test-env.rc
     (test-python) $ cd tripleo_ansible/roles/${NEWROLENAME}/
-    (test-python) $ molecule test --all
+    (test-python) $ molecule --base-config ../../../.config/molecule/config.yml test --all
 
+To run a test using the `podman` driver, `ansible-test-env-podman.rc` also
+needs to be sourced, and specify the `config_podman.yml` molecule config.
+
+.. code-block:: console
+
+    (test-python) $ source ansible-test-env.rc
+    (test-python) $ source ansible-test-env-podman.rc
+    (test-python) $ cd tripleo_ansible/roles/${NEWROLENAME}/
+    (test-python) $ molecule --base-config ../../../.config/molecule/config_podman.yml test --all
 
 If a role has more than one scenario, a specific scenario can be
 specified on the command line. Running specific scenarios will

tripleo_ansible/roles/test_deps/tasks/main.yml

@@ -48,17 +48,6 @@
     - (ansible_facts['os_family'] | lower) == 'redhat'
     - mirrors_file.stat.exists | bool
   block:
-    - name: Fetch latest repo version
-      uri:
-        url: https://trunk.rdoproject.org/centos{{ ansible_facts['distribution_major_version'] }}/current/delorean.repo
-        return_content: true
-      register: tripleo_packages
-
-    - name: Create default repo file
-      copy:
-        content: "{{ tripleo_packages.content }}"
-        dest: /etc/yum.repos.d/delorean.repo
-
     - name: Disable ubi host subscription-manager integration
       file:
         path: /etc/rhsm-host
@@ -75,6 +64,22 @@
         - ubi-9-baseos
         - ubi-9-codeready-builder
 
+- name: tripleo-repos Block
+  become: true
+  when:
+    - (ansible_facts['os_family'] | lower) == 'redhat'
+  block:
+    - name: Fetch latest repo version
+      uri:
+        url: https://trunk.rdoproject.org/centos{{ ansible_facts['distribution_major_version'] }}/current/delorean.repo
+        return_content: true
+      register: tripleo_packages
+
+    - name: Create default repo file
+      copy:
+        content: "{{ tripleo_packages.content }}"
+        dest: /etc/yum.repos.d/delorean.repo
+
 - name: Install tripleo-repos package
   become: true
   package: