Enable API operation log on conformance job

To verify all conformance tests call GA APIs only without alpha,
beta APIs, this enables API operation log on the conformance job.
One concern is this makes e2e.log huge. So to consider it, the
original size of e2e.log is 112,909[1] before applying this.

[1]: https://gcsweb.k8s.io/gcs/kubernetes-jenkins/pr-logs/pull/70639/pull-kubernetes-conformance-image-test/1116565046130905089/artifacts/

cluster/images/conformance/Dockerfile

@@ -25,6 +25,7 @@ ENV E2E_FOCUS="\[Conformance\]"
 ENV E2E_SKIP=""
 ENV E2E_PROVIDER="local"
 ENV E2E_PARALLEL="1"
+ENV E2E_VERBOSITY="4"
 ENV RESULTS_DIR="/tmp/results"
 ENV KUBECONFIG=""
 

cluster/images/conformance/conformance-e2e.yaml

@@ -66,6 +66,8 @@ spec:
       value: "skeleton"
     - name: E2E_PARALLEL
       value: "false"
+    - name: E2E_VERBOSITY
+      value: "4"
     volumeMounts:
     - name: output-volume
       mountPath: /tmp/results

cluster/images/conformance/run_e2e.sh

@@ -59,7 +59,7 @@ ginkgo_args+=(
 )
 
 set -x
-/usr/local/bin/ginkgo "${ginkgo_args[@]}" /usr/local/bin/e2e.test -- --disable-log-dump --repo-root=/kubernetes --provider="${E2E_PROVIDER}" --report-dir="${RESULTS_DIR}" --kubeconfig="${KUBECONFIG}" | tee "${RESULTS_DIR}"/e2e.log &
+/usr/local/bin/ginkgo "${ginkgo_args[@]}" /usr/local/bin/e2e.test -- --disable-log-dump --repo-root=/kubernetes --provider="${E2E_PROVIDER}" --report-dir="${RESULTS_DIR}" --kubeconfig="${KUBECONFIG}" -v="${E2E_VERBOSITY}" | tee "${RESULTS_DIR}"/e2e.log &
 set +x
 # $! is the pid of tee, not ginkgo
 wait "$(pgrep ginkgo)" && ret=0 || ret=$?