message: updated envoy filter example hash
diff: @@ -78,7 +78,7 @@ then
  fi
  # This is the hash on https://github.com/lyft/envoy-filter-example.git we pin to.
  -(cd "${ENVOY_FILTER_EXAMPLE_SRCDIR}" && git fetch origin && git checkout 2cad2976f6af77508473512c6823762a8a0ef253)
  +(cd "${ENVOY_FILTER_EXAMPLE_SRCDIR}" && git fetch origin && git checkout 29981ca67a9ac9a28e688f69f21c1ed65b8b7592)
  cp -f "${ENVOY_SRCDIR}"/ci/WORKSPACE.filter.example "${ENVOY_FILTER_EXAMPLE_SRCDIR}"/WORKSPACE
  # Also setup some space for building Envoy standalone.
  