Add lint-test Github action (open-telemetry#5)

Author: dmitryax

.github/workflows/lint-test.yaml

@@ -0,0 +1,29 @@
+name: Lint and Test Charts
+
+on: pull_request
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Fetch history
+        run: git fetch --prune --unshallow
+
+      - name: Run chart-testing (lint)
+        id: lint
+        uses: helm/[email protected]
+        with:
+          command: lint
+
+      - name: Create kind cluster
+        uses: helm/[email protected]
+        # Only build a kind cluster if there are chart changes to test.
+        if: steps.lint.outputs.changed == 'true'
+
+      - name: Run chart-testing (install)
+        uses: helm/[email protected]
+        with:
+          command: install

ct.yaml

@@ -0,0 +1,7 @@
+# See https://github.com/helm/chart-testing#configuration
+remote: origin
+chart-dirs:
+  - charts
+chart-repos:
+  - bitnami=https://charts.bitnami.com/bitnami
+helm-extra-args: --timeout 600s