client-gen: generate an interface which allows user to expand typed client's methods

Switch to m3.medium for e2e testing

Skip gcloud update checks for Jenkins jobs.

Update aws-sdk-go to 1.0.7

to fix comment for apis.extensions.JobCondition

AWS: Load cluster env during the validation

Don't pull flannel from github

Up timeout for gke-reboot; fixes #19539

Track most remaining Jenkins E2E jobs.

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Make MetricsForE2E public

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Add 5-minute sleep in GKE for dead tunnels to be removed

Add kubernetes-test-go and ilk to source control.

Fix fake docker client to corretly report status of containers

Add a container runtime mock for testing

Revert "Remove FailedResourceType and return custom error"

Improve ES test resilience 

Add soak tests to source control.

Update docker-multinode instructions and version. Also run kube-proxy in a pod in the docker-multnode manifest

Changes required for test analyzer

Run test for grabbing metrics from Kubelet only on GCE

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