Add examples E2E job to source control.

hack/jenkins/job-configs/kubernetes-e2e.yaml

@@ -62,6 +62,9 @@
         - 'gce-flannel':
             description: 'Run E2E tests on GCE using Flannel and the latest successful build. This suite is quarantined in a dedicated project because Flannel integration is experimental.'
             timeout: 90
+        - 'gce-examples':
+            description: 'Run e2e examples test on GCE using the latest successful Kubernetes build.'
+            timeout: 90
     jobs:
         - 'kubernetes-e2e-{suffix}'