Add Istio e2e tests

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

.github/workflows/build.yaml

@@ -24,6 +24,10 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: 1.15.x
+      - name: Download modules
+        run: |
+          go mod download
+          go install golang.org/x/tools/cmd/goimports
       - name: Run tests
         run: make test
       - name: Check if working tree is dirty

.github/workflows/e2e.yaml

@@ -0,0 +1,28 @@
+name: e2e
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - github-actions
+
+jobs:
+  kind:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        provider:
+          - istio
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Kubernetes
+        uses: engineerd/setup-kind@v0.5.0
+      - name: Build container image
+        run: docker build -t test/flagger:latest .
+      - name: Load test image
+        run: kind load docker-image test/flagger:latest
+      - name: Run tests
+        run: |
+          ./test/${{ matrix['provider'] }}/run.sh