[chore] add e2e tests that test cluster receiver metrics and an attem…

…pt to test trace auto-instrumentation

.github/workflows/configs/e2e-kind-config.yaml

@@ -0,0 +1,6 @@
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+kubeadmConfigPatches:
+  - |
+    kind: KubeletConfiguration
+    serverTLSBootstrap: true

.github/workflows/e2e.yaml

@@ -0,0 +1,106 @@
+name: e2e-tests
+
+
+on: pull_request
+
+env:
+  # Make sure to exit early if cache segment download times out after 2 minutes.
+  # We limit cache download as a whole to 5 minutes.
+  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 2
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ~1.20.8
+          cache: false
+      - name: Cache Go
+        id: go-cache
+        timeout-minutes: 5
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/go/bin
+            ~/go/pkg/mod
+          key: go-cache-${{ runner.os }}-${{ hashFiles('**/go.sum') }}
+      - name: Install dependencies
+        if: steps.go-cache.outputs.cache-hit != 'true'
+        run: make -j2 gomoddownload
+      - name: Build Docker Image
+        run: |
+          cd e2e_tests/testdata/nodejs
+          docker build -t nodejs_test:latest .
+      - name: export image to tar
+        run: |
+          docker save nodejs_test:latest > /tmp/nodejs_test.tar
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: nodejs_test
+          path: /tmp/nodejs_test.tar
+  kubernetes-test:
+    env:
+      KUBECONFIG: /tmp/kube-config-splunk-otel-collector-chart-e2e-testing
+    strategy:
+      matrix:
+        k8s-version: ["v1.28.0"]
+    runs-on: ubuntu-latest
+    needs: docker-build
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ~1.20.8
+          cache: false
+      - name: Cache Go
+        id: go-cache
+        timeout-minutes: 5
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/go/bin
+            ~/go/pkg/mod
+          key: go-cache-${{ runner.os }}-${{ hashFiles('**/go.sum') }}
+      - name: Install dependencies
+        if: steps.go-cache.outputs.cache-hit != 'true'
+        run: make -j2 gomoddownload
+      - name: Create kind cluster
+        uses: helm/kind-action@v1.8.0
+        with:
+          node_image: kindest/node:${{ matrix.k8s-version }}
+          kubectl_version: ${{ matrix.k8s-version }}
+          cluster_name: kind
+          config: ./.github/workflows/configs/e2e-kind-config.yaml
+      - name: Fix kubelet TLS server certificates
+        run: |
+          kubectl get csr -o=jsonpath='{range.items[?(@.spec.signerName=="kubernetes.io/kubelet-serving")]}{.metadata.name}{" "}{end}' | xargs kubectl certificate approve
+      - name: Download artifact
+        uses: actions/download-artifact@v3
+        with:
+          name: nodejs_test
+          path: /tmp
+      - name: Load Docker image
+        run: |
+          docker load --input /tmp/nodejs_test.tar
+      - name: Kind load image
+        run: |
+          kind load docker-image nodejs_test:latest --name kind
+      - name: 'Deploy'
+        uses: 'deliverybot/helm@v1'
+        with:
+          release: 'sock'
+          namespace: 'default'
+          chart: helm-charts/splunk-otel-collector
+          value-files: >-
+            [
+              "e2e_tests/testdata/nodejs_traces_values.yaml",
+            ]
+        env:
+          KUBECONFIG_FILE: /tmp/kube-config-splunk-otel-collector-chart-e2e-testing
+      - name: run e2e tests
+        run: |
+          cd e2e_tests
+          go test -v