fix: Add workaround init container to fix test infra (#6618)

* debug to see e2e test

* debug

* updated gcloud version

* added networking issue workaround

test/component_test.yaml

@@ -95,6 +95,19 @@ spec:
         - name: strict-image-name
           valueFrom:
             path: /outputs/strict-image-name/file
+      # TODO work around networking issues,remove initContainers once networking issues gets resolved
+      initContainers:
+        - name: workaround
+          image: k8s.gcr.io/build-image/debian-iptables-amd64:buster-v1.6.7
+          command:
+            - sh
+            - -c
+            - "iptables -t mangle -A POSTROUTING -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu"
+          securityContext:
+            capabilities:
+              add:
+                - NET_ADMIN
+            privileged: true
       container:
       image: "{{workflow.parameters.image-builder-image}}"
       imagePullPolicy: 'Always'

test/e2e_test_gke_v2.yaml

@@ -195,6 +195,19 @@ spec:
         - name: strict-image-name
           valueFrom:
             path: /outputs/strict-image-name/file
+    # TODO work around networking issues,remove initContainers once networking issues gets resolved
+    initContainers:
+    - name: workaround
+      image: k8s.gcr.io/build-image/debian-iptables-amd64:buster-v1.6.7
+      command:
+        - sh
+        - -c
+        - "iptables -t mangle -A POSTROUTING -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu"
+      securityContext:
+        capabilities:
+          add:
+            - NET_ADMIN
+        privileged: true
     container:
       image: "{{workflow.parameters.image-builder-image}}"
       imagePullPolicy: 'Always'

test/sample_test.yaml

@@ -127,6 +127,19 @@ spec:
           - name: strict-image-name
             valueFrom:
               path: /outputs/strict-image-name/file
+      # TODO work around networking issues,remove initContainers once networking issues gets resolved
+      initContainers:
+        - name: workaround
+          image: k8s.gcr.io/build-image/debian-iptables-amd64:buster-v1.6.7
+          command:
+            - sh
+            - -c
+            - "iptables -t mangle -A POSTROUTING -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu"
+          securityContext:
+            capabilities:
+              add:
+                - NET_ADMIN
+            privileged: true
       container:
         image: "{{workflow.parameters.image-builder-image}}"
         imagePullPolicy: 'Always'