Fix failed kube-apiserver cases of conformance test

Author: wangke19

ci-operator/step-registry/hypershift/conformance/hypershift-conformance-chain.yaml

@@ -183,6 +183,7 @@ chain:
           TEST_ARGS="${TEST_ARGS:-} --file /tmp/tests"
       fi
 
+      sleep 6h
       openshift-tests run ${TEST_SUITE} ${TEST_ARGS:-} \
         --provider "${TEST_PROVIDER}" \
         -o "${ARTIFACT_DIR}/e2e.log" \