Add GitHub Actions workflows (DataDog#1787)

.github/workflows/master.yml

@@ -0,0 +1,26 @@
+name: Master
+
+on:
+  push:
+    branches:
+    - master
+
+jobs:
+  test:
+    uses: ./.github/workflows/test-all.yml
+    with:
+      repo: extras
+
+      # Options
+      standard: true
+    secrets: inherit
+
+  publish-test-results:
+    needs:
+    - test
+    if: success() || failure()
+    concurrency:
+      group: test-results
+
+    uses: DataDog/integrations-core/.github/workflows/test-results-master.yml@master
+    secrets: inherit

.github/workflows/pr.yml

@@ -0,0 +1,17 @@
+name: PR
+
+on:
+  pull_request:
+    branches:
+    - master
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.head_ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    uses: DataDog/integrations-core/.github/workflows/pr-test.yml@master
+    with:
+      repo: extras
+    secrets: inherit

.github/workflows/publish-test-results-pr.yml

@@ -0,0 +1,17 @@
+name: Publish test results for PRs
+
+on:
+  workflow_run:
+    workflows:
+    - PR
+    types:
+    - completed
+
+jobs:
+  publish:
+    uses: DataDog/integrations-core/.github/workflows/test-results-pr.yml@master
+    if: github.event.workflow_run.conclusion != 'skipped'
+    permissions:
+      checks: write
+      pull-requests: write
+    secrets: inherit

.github/workflows/test-agent.yml

@@ -0,0 +1,51 @@
+name: Test Agent release
+
+on:
+  workflow_dispatch:
+    inputs:
+      test-py3:
+        required: false
+        description: Run Python 3 tests
+        default: true
+        type: boolean
+      agent-image:
+        required: false
+        description: Agent 7 image
+        default: "datadog/agent:7-rc"
+        type: string
+      agent-image-windows:
+        required: false
+        description: Agent 7 image on Windows
+        default: "datadog/agent:7-rc-servercore"
+        type: string
+      test-py2:
+        required: false
+        description: Run Python 2 tests
+        default: true
+        type: boolean
+      agent-image-py2:
+        required: false
+        description: Agent 6 image
+        default: "datadog/agent:6-rc"
+        type: string
+      agent-image-windows-py2:
+        required: false
+        description: Agent 6 image on Windows
+        default: "datadog/agent-dev:master-py2-win-servercore"
+        type: string
+
+jobs:
+  test:
+    uses: ./.github/workflows/test-all.yml
+    with:
+      repo: extras
+
+      # Options
+      standard: true
+      test-py2: ${{ inputs.test-py2 }}
+      test-py3: ${{ inputs.test-py3 }}
+      agent-image: "${{ inputs.agent-image }}"
+      agent-image-py2: "${{ inputs.agent-image-py2 }}"
+      agent-image-windows: "${{ inputs.agent-image-windows }}"
+      agent-image-windows-py2: "${{ inputs.agent-image-windows-py2 }}"
+    secrets: inherit