This PR adds the following configurations for google/cloud/compute Python GAPIC builds

• rest_numeric_enums
• service_yaml

Setting rest_numeric_enums to False is a no-op because False is the default value. This was only added for completeness.

https://github.com/googleapis/gapic-generator-python/blob/01aed595d5deffd996410acf6b9f7eca737d027d/rules_python_gapic/py_gapic.bzl#L46

rest_numeric_enums could be set to True in the future however it's not clear what the downstream impact will be. I'd rather not make that change in this PR.

FWIW, the following command works

curl -X GET -H "Authorization: Bearer $(gcloud auth print-access-token)" "https://compute.googleapis.com/compute/v1/projects/<REDACTED PROJECT ID>/aggregated/instances?alt=json%3Benum-encoding%3Dint"