helm: Added chart linting and testing to CI.

.github/workflows/helm-chart-lint.yaml

@@ -0,0 +1,37 @@
+name: Lint and test helm charts
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.8.1
+
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+
+      - name: Set up chart-testing
+        uses: helm/[email protected]
+
+      - name: Run chart-testing (lint)
+        run: ct lint --target-branch ${{ github.event.repository.default_branch }}
+
+      - name: Create kind cluster
+        uses: helm/[email protected]
+
+      - name: Run chart-testing (install)
+        run: ct install