Use centralized requirements for molecule testing

In order to make molecule tests more widespread across roles to cover
variety of usecases, a centralized approach on managing molecule
requirements is applied.

It ensures that there's no need to separately maintain requirements
for molecule and they can be aligned from integrated repo.

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/938571
Change-Id: I4f0b6705f5bdd0ba14225775108732db32600cb3

.zuul.yaml

@@ -1,33 +1,6 @@
 ---
 
-- job:
-    name: tox-molecule-bookworm
-    parent: tox-molecule
-    vars:
-      tox_envlist: molecule-bookworm
-
-- job:
-    name: tox-molecule-jammy
-    parent: tox-molecule
-    vars:
-      tox_envlist: molecule-jammy
-
-- job:
-    name: tox-molecule-stream9
-    parent: tox-molecule
-    vars:
-      tox_envlist: molecule-stream9
-
 - project:
-    check:
+    templates:
-      jobs:
+      - openstack-ansible-linters-jobs
-        - tox-linters
+      - openstack-ansible-molecule
-        - tox-molecule-bookworm
-        - tox-molecule-jammy
-        - tox-molecule-stream9
-    gate:
-      jobs:
-        - tox-linters
-        - tox-molecule-bookworm
-        - tox-molecule-jammy
-        - tox-molecule-stream9

examples/playbook.yml

@@ -0,0 +1,6 @@
+---
+
+- name: Installing frr
+  hosts: frr
+  roles:
+    - role: "frrouting"

molecule/default/molecule.yml

@@ -10,8 +10,8 @@ platforms:
   - name: primary
     groups:
       - frr
-    image: "${docker_user:-quay.io/gotmax23}/${docker_image_tag:-debian-systemd:buster}"
+    image: "${DOCKER_REGISTRY:-quay.io/gotmax23}/${DOCKER_IMAGE_TAG:-debian-systemd:bookworm}"
-    command: ${docker_command:-""}
+    command: ${DOCKER_COMMAND:-""}
     privileged: true
     pre_build_image: true
     networks:
@@ -24,8 +24,8 @@ platforms:
   - name: secondary
     groups:
       - frr
-    image: "${docker_user:-quay.io/gotmax23}/${docker_image_tag:-debian-systemd:buster}"
+    image: "${DOCKER_REGISTRY:-quay.io/gotmax23}/${DOCKER_IMAGE_TAG:-debian-systemd:bookworm}"
-    command: ${docker_command:-""}
+    command: ${DOCKER_COMMAND:-""}
     privileged: true
     pre_build_image: true
     networks:

molecule/default/prepare.yml

@@ -19,6 +19,7 @@
         - ca-certificates
         - "{{ iproute_package_name[ansible_facts['os_family'] | lower] }}"
         - "{{ iputils_package_name[ansible_facts['os_family'] | lower] }}"
+        - sudo
 
     - name: Clear gathered facts
       meta: clear_facts

tox.ini

@@ -1,7 +1,7 @@
 [tox]
-minversion = 3.1
+minversion = 4.0
 skipsdist = True
-envlist = linters
+envlist = linters, molecule
 ignore_basepython_conflict = True
 
 [testenv]
@@ -10,7 +10,8 @@ usedevelop = False
 commands =
     /usr/bin/find . -type f -name "*.pyc" -delete
 deps =
-    -r{toxinidir}/test-requirements.txt
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -rhttps://opendev.org/openstack/openstack-ansible/raw/branch/{env:TEST_BRANCH:master}/test-requirements.txt
 passenv =
     COMMON_TESTS_PATH
     HOME
@@ -27,7 +28,7 @@ allowlist_externals =
     bash
 setenv =
     PYTHONUNBUFFERED=1
-    TEST_IDEMPOTENCE=false
+    TEST_IDEMPOTENCE=true
     VIRTUAL_ENV={envdir}
     WORKING_DIR={toxinidir}
 
@@ -37,47 +38,20 @@ setenv =
     ANSIBLE_ROLES_PATH={envdir}
 commands =
     ansible-galaxy role install git+file://{toxinidir} --roles-path {envdir} --force
-    ansible-lint {toxinidir}/molecule/default/playbook.yml
+    ansible-lint {toxinidir}/examples/playbook.yml
     yamllint {toxinidir}
 
 
-[molecule]
+[testenv:molecule]
-deps =
+# You can use DOCKER_REGISTRY and DOCKER_IMAGE_TAG to switch between
-    {[testenv]deps}
+# tested distros. I.e:
-    docker
+# DOCKER_IMAGE_TAG=ubuntu-systemd:jammy tox -e molecule
-    molecule
-    molecule-plugins[docker]
 
 commands =
     molecule test
 
-setenv =
+passenv =
-    {[testenv]setenv}
+    {[testenv]passenv}
-
+    DOCKER_REGISTRY
-[testenv:molecule-bookworm]
+    DOCKER_IMAGE_TAG
-deps =
+    DOCKER_COMMAND
-    {[molecule]deps}
-commands =
-    {[molecule]commands}
-setenv =
-    {[molecule]setenv}
-    docker_image_tag=debian-systemd:bookworm
-
-[testenv:molecule-jammy]
-deps =
-    {[molecule]deps}
-commands =
-    {[molecule]commands}
-setenv =
-    {[molecule]setenv}
-    docker_image_tag=ubuntu-systemd:jammy
-
-
-[testenv:molecule-stream9]
-deps =
-    {[molecule]deps}
-commands =
-    {[molecule]commands}
-setenv =
-    {[molecule]setenv}
-    docker_image_tag=centos-systemd:stream9