Enable google/cloud/asset

[coryan]

We cannot compile google/cloud/asset with protobuf <= 3.19.3 (current as-of 2022-01-28) because the protos define TRUE and FALSE as enums, while they are macros on macOS:

In file included from bazel-out/darwin-fastbuild/bin/external/com_google_googleapis/google/cloud/asset/v1/asset_service.pb.h:40:
bazel-out/darwin-fastbuild/bin/external/com_google_googleapis/google/cloud/asset/v1/assets.pb.h:4015:36: error: expected member name or ';' after declaration specifiers
  static constexpr EvaluationValue TRUE =
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
/Applications/Xcode_12.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/include/mach/boolean.h:81:17: note: expanded from macro 'TRUE'
#define TRUE    1
                ^

[coryan]

This is now unblocked.

[dbolduc]

Windows bazel builds are still blocked. E.g. https://source.cloud.google.com/results/invocations/90512c0b-7383-4221-a311-b49200c0e635

They fail on the TRUE, FALSE definitions. port_def.inc inside google3 handles these (internal link), but the open source doesn't (link). I did not look into why these are out of sync, despite the internal changes being made in 2021-04

[coryan]

Need to wait until Protobuf v23 and the corresponding changes in gRPC.

[coryan]

Only cleaning up some CI builds remains. We need to wait until a release of google-cloud-cpp, and a release of vcpkg that includes Protobuf 23 and our library.

[coryan]

This is now fixed.