feat(rnd,infra): Add Helm linting in CI (#7633)

* Set up helm and tf for backend

* update helm charts and settings

* remove example files

* use latest tag

* delay and timeouts for probes

* env based pyro host

* default backend

* linting

* add helm linting in CI

* read from settings

* fix formatting

* update to use config

.github/workflows/autogpt-infra-ci.yml

@@ -23,6 +23,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
       - name: TFLint
         uses: pauloconnor/tflint-action@v0.0.2
         env:
@@ -31,3 +34,23 @@ jobs:
             tflint_path: terraform/
             tflint_recurse: true
             tflint_changed_only: false
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v4.2.0
+        with:
+          version: v3.14.4
+
+      - name: Set up chart-testing
+        uses: helm/chart-testing-action@v2.6.0
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --target-branch ${{ github.event.repository.default_branch }})
+          if [[ -n "$changed" ]]; then
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Run chart-testing (lint)
+        if: steps.list-changed.outputs.changed == 'true'
+        run: ct lint --target-branch ${{ github.event.repository.default_branch }}