VIO-3108 Upgrade breaking gRPC version

[DillonEnge]

No description provided.

[GuessWhoSamFoo]

@kamilovio gave a great overview of the problem space in slack.

The issue can be surfaced by:

$ cd python
$ make test

and seeing this error:

E   TypeError: Descriptors cannot not be created directly.
E   If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
E   If you cannot immediately regenerate your protos, some other possible workarounds are:
E    1. Downgrade the protobuf package to 3.20.x or lower.
E    2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).
E   
E   More information: https://developers.google.com/protocol-buffers/docs/news/2022-05-06#python-updates

Inspecting the toolchain to generate pb files via docker run --rm -it --entrypoint bash grpc/python:1.4, the general output is something like:

root@73ba0a48909b:/# pip show grpcio
Name: grpcio
Version: 1.4.0
Summary: HTTP/2-based RPC framework
Home-page: http://www.grpc.io
Author: The gRPC Authors
Author-email: grpc-io@googlegroups.com
License: 3-clause BSD
Location: /usr/local/lib/python3.6/site-packages
Requires: protobuf, six
Required-by: grpcio-tools

The Makefile also does some text replacement for the python imports.

Checking against the new image: docker run --rm -it --entrypoint bash namely/protoc-all:latest - we get protoc 3+ as recommended by the docs at the time of writing.

root@d9e18be909a3:/defs# protoc --version
libprotoc 3.21.6

docker run -v $(pwd):/defs namely/protoc-all -f synse.proto -l python will regenerate the pb files under /gen.

Remaining pieces here are:

1. Moving the autogenerated code to overwrite the old ones.
2. Update import path or address this in the tests
3. Fix file permissions

If we wanted to continue using python to manage the toolchain, I am okay with that but would like to see a corresponding Dockerfile with this PR.

[GuessWhoSamFoo]

This looks pretty good. Next steps would be bumping to 3.2 and incrementing https://github.com/vapor-ware/synse-server/blob/develop/pyproject.toml#L23