Move testing into reusable actions

.github/actions/destroy/action.yml

@@ -0,0 +1,18 @@
+name: Azimuth CI destroy
+description: Destroys an Azimuth CI environment.
+inputs:
+  azimuth-ops-version:
+    description: >
+      The azimuth-ops version to use. If not given, the default version is used.
+    required: true
+    default: ""
+runs:
+  using: composite
+  steps:
+    - name: Destroy Azimuth
+      shell: bash
+      # Make sure to source the ci environment before running the destroy
+      run: |
+        set -e
+        source ./ci.env
+        ./bin/ci-exec destroy

.github/actions/provision/action.yml

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+name: Azimuth CI provision
+description: Provisions an Azimuth environment using the CI config.
+inputs:
+  azimuth-ops-version:
+    description: >
+      The azimuth-ops version to use. If not given, the default version is used.
+    required: true
+    default: ""
+runs:
+  using: composite
+  steps:
+    - name: Update azimuth-ops version in requirements.yml
+      shell: bash
+      run: cat > requirements.yml <<< "$REQUIREMENTS_CONTENT"
+      env:
+        REQUIREMENTS_CONTENT: |
+          ---
+          collections:
+            - name: https://github.com/stackhpc/ansible-collection-azimuth-ops.git
+              type: git
+              version: ${{ inputs.azimuth-ops-version }}
+      if: ${{ inputs.azimuth-ops-version != '' }}
+
+    - name: Deploy Azimuth
+      shell: bash
+      # Make sure to source the ci environment before running the provision
+      run: |
+        set -e
+        source ./ci.env
+        ./bin/ci-exec provision

.github/actions/setup/action.yml

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+name: Azimuth CI setup
+description: Sets up an environment for running Azimuth CI.
+inputs:
+  config-ref:
+    description: The ref of the azimuth-config repo to check out.
+    required: true
+    default: feature/ci-external-actions
+  os-clouds:
+    description: The contents of the clouds.yaml to use.
+    required: true
+  os-cloud-name:
+    description: The name of the cloud within the clouds.yaml to use.
+    required: true
+    default: openstack
+  environment-prefix:
+    description: >
+      The environment prefix to use. The run ID will be appended to this,
+      separated by a hyphen.
+    required: true
+    default: ci
+runs:
+  using: composite
+  steps:
+    - name: Checkout azimuth-config repo
+      uses: actions/checkout@v3
+      with:
+        repository: stackhpc/azimuth-config
+        ref: ${{ inputs.config-ref }}
+
+    - name: Write clouds.yaml
+      shell: bash
+      run: cat > ./clouds.yaml <<< "$OS_CLOUDS"
+      env:
+        OS_CLOUDS: ${{ inputs.os-clouds }}
+
+    # This environment file will be sourced before running any other actions
+    - name: Write environment file
+      shell: bash
+      run: cat > ./ci.env <<< "$CI_ENV"
+      env:
+        CI_ENV: |
+          set -a
+          OS_CLOUD="${{ inputs.os-cloud-name }}"
+          OS_CLIENT_CONFIG_FILE="$PWD/clouds.yaml"
+          AZIMUTH_CONFIG_ENVIRONMENT=ci
+          AZIMUTH_ENVIRONMENT="${{ inputs.environment-prefix }}-${{ github.run_id }}"
+          set +a

.github/actions/test/action.yml

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+name: Azimuth CI tests
+description: Tests an Azimuth environment using the CI config.
+# inputs:
+runs:
+  using: composite
+  steps:
+    - name: Check expected alerts are pending or firing
+      shell: bash
+      # Make sure to source the ci environment before running the tests
+      run: |
+        set -e
+        source ./ci.env
+        source ./bin/activate $AZIMUTH_CONFIG_ENVIRONMENT $AZIMUTH_ENVIRONMENT
+        ./bin/check-alerts

.github/workflows/test-pr.yml

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+name: Test Azimuth deployment
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - ready_for_review
+      - reopened
+    branches:
+      - main
+    paths-ignore:
+      - 'docs/**'
+
+concurrency:
+  group: ${{ github.head_ref }}
+  cancel-in-progress: true
+
+jobs:
+  # This job exists so that PRs from outside the main repo are rejected
+  fail_on_remote:
+    runs-on: ubuntu-latest
+    steps:
+      - name: PR must be from a branch in the azimuth-images repo
+        run: exit ${{ github.repository == 'stackhpc/azimuth-config' && '0' || '1' }}
+
+  # This job exists so that draft PRs see the check as failed
+  fail_on_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - name: PR must be marked as ready for review before tests will run
+        run: exit ${{ github.event.pull_request.draft && '1' || '0' }}
+
+  run_azimuth_tests:
+    needs: [fail_on_remote, fail_on_draft]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Azimuth environment
+        uses: ./.github/actions/setup
+        with:
+          # Make sure to check out the config version under test
+          config-ref: ${{ github.sha }}
+          os-clouds: ${{ secrets.CLOUD }}
+          environment-prefix: ci
+
+      - name: Provision Azimuth
+        uses: ./.github/actions/provision
+
+      - name: Run Azimuth tests
+        uses: ./.github/actions/test
+
+      - name: Destroy Azimuth
+        uses: ./.github/actions/destroy
+        if: ${{ always() }}