Helm Chart Documentation and CI Updates (#4243)

.github/workflows/helm_ci.yml

@@ -0,0 +1,51 @@
+name: "helm: lint and test charts"
+
+on:
+  push:
+    branches: [ master ]
+    paths: ['k8s/**']
+  pull_request:
+    branches: [ master ]
+    paths: ['k8s/**']
+
+permissions:
+  contents: read
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v3
+        with:
+          version: v3.10.0
+
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+          check-latest: true
+
+      - name: Set up chart-testing
+        uses: helm/chart-testing-action@v2.3.1
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --chart-dirs k8s/charts)
+          if [[ -n "$changed" ]]; then
+            echo "::set-output name=changed::true"
+          fi
+
+      - name: Run chart-testing (lint)
+        run: ct lint --all --validate-maintainers=false --chart-dirs k8s/charts
+
+      - name: Create kind cluster
+        uses: helm/kind-action@v1.4.0
+
+      - name: Run chart-testing (install)
+        run: ct install --all --chart-dirs k8s/charts