Merge pull request #60377 from dims/support-running-local-up-cluster-in-ci

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Support Running local-up-cluster in CI

**What this PR does / why we need it**:

We have a new CI job for running conformance tests with local-up-cluster.sh: 
https://k8s-testgrid.appspot.com/sig-testing-misc#ci-kubernetes-local-e2e

In this PR, we do some additional tasks to be able to setup and run kubetest

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

hack/local-up-cluster.sh

@@ -947,6 +947,15 @@ EOF
 fi
 }
 
+# If we are running in the CI, we need a few more things before we can start
+if [[ "${KUBETEST_IN_DOCKER:-}" == "true" ]]; then
+  echo "Preparing to test ..."
+  ${KUBE_ROOT}/hack/install-etcd.sh
+  export PATH="${KUBE_ROOT}/third_party/etcd:${PATH}"
+  KUBE_FASTBUILD=true make ginkgo cross
+  apt install -y sudo
+fi
+
 # validate that etcd is: not running, in path, and has minimum required version.
 if [[ "${START_MODE}" != "kubeletonly" ]]; then
   kube::etcd::validate
@@ -1022,3 +1031,10 @@ print_success
 if [[ "${ENABLE_DAEMON}" = false ]]; then
   while true; do sleep 1; done
 fi
+
+if [[ "${KUBETEST_IN_DOCKER:-}" == "true" ]]; then
+  cluster/kubectl.sh config set-cluster local --server=https://localhost:6443 --certificate-authority=/var/run/kubernetes/server-ca.crt
+  cluster/kubectl.sh config set-credentials myself --client-key=/var/run/kubernetes/client-admin.key --client-certificate=/var/run/kubernetes/client-admin.crt
+  cluster/kubectl.sh config set-context local --cluster=local --user=myself
+  cluster/kubectl.sh config use-context local
+fi