message: Fix Envoy Version Test - Label Agnostic
  To support internal builds of Envoy that may assign a label other than
  `dev`, there is no good reason that this test should hardcode that value
  in and can still be correct.
diff: @@ -5,7 +5,7 @@ set -e -o pipefail
  ENVOY_BIN=${TEST_SRCDIR}/envoy/source/exe/envoy-static
  COMMIT=$(${ENVOY_BIN} --version | \
  - sed -n -E 's/.*version: ([0-9a-f]{40})\/([0-9]+\.[0-9]+\.[0-9]+)(-dev)?\/(Clean|Modified)\/(RELEASE|DEBUG)\/([a-zA-Z-]+)$/\1/p')
  + sed -n -E 's/.*version: ([0-9a-f]{40})\/([0-9]+\.[0-9]+\.[0-9]+)(-[a-zA-Z0-9\-_]+)?\/(Clean|Modified)\/(RELEASE|DEBUG)\/([a-zA-Z-]+)$/\1/p')
  EXPECTED=$(cat ${TEST_SRCDIR}/envoy/bazel/raw_build_id.ldscript)
  @@ -15,7 +15,7 @@ if [[ ${COMMIT} != ${EXPECTED} ]]; then
  fi
  VERSION=$(${ENVOY_BIN} --version | \
  - sed -n -E 's/.*version: ([0-9a-f]{40})\/([0-9]+\.[0-9]+\.[0-9]+)(-dev)?\/(Clean|Modified)\/(RELEASE|DEBUG)\/([a-zA-Z-]+)$/\2\3/p')
  + sed -n -E 's/.*version: ([0-9a-f]{40})\/([0-9]+\.[0-9]+\.[0-9]+)(-[a-zA-Z0-9\-_]+)?\/(Clean|Modified)\/(RELEASE|DEBUG)\/([a-zA-Z-]+)$/\2\3/p')
  EXPECTED=$(cat ${TEST_SRCDIR}/envoy/VERSION)
  