message: Add hard-coded /hot_restart_version test
diff: @@ -167,6 +167,19 @@ do
  disableHeapCheck
  + # To ensure that we don't accidentally change the /hot_restart_version
  + # string, compare it against a hard-coded string.
  + start_test Checking for consistency of /hot_restart_version
  + CLI_HOT_RESTART_VERSION=$("${ENVOY_BIN}" --hot-restart-version --base-id "${BASE_ID}" 2>&1)
  + EXPECTED_CLI_HOT_RESTART_VERSION="10.200.16384.127.options=capacity=16384, num_slots=8209 hash=228984379728933363 size=2654312"
  + check [ "${CLI_HOT_RESTART_VERSION}" = "${EXPECTED_CLI_HOT_RESTART_VERSION}" ]
  +
  + start_test Checking for consistency of /hot_restart_version with --max-obj-name-len 500
  + CLI_HOT_RESTART_VERSION=$("${ENVOY_BIN}" --hot-restart-version --base-id "${BASE_ID}" \
  + --max-obj-name-len 500 2>&1)
  + EXPECTED_CLI_HOT_RESTART_VERSION="10.200.16384.567.options=capacity=16384, num_slots=8209 hash=228984379728933363 size=9863272"
  + check [ "${CLI_HOT_RESTART_VERSION}" = "${EXPECTED_CLI_HOT_RESTART_VERSION}" ]
  +
  start_test Checking for match of --hot-restart-version and admin /hot_restart_version
  ADMIN_ADDRESS_0=$(cat "${ADMIN_ADDRESS_PATH_0}")
  echo fetching hot restart version from http://${ADMIN_ADDRESS_0}/hot_restart_version ...
  