Use secure gRPC channels for spot_wrapper.testing mocks

[mhidalgo-bdai]

Pretty much what the title says. This patch drops bosdyn monkeypatching in favor of self-signed SSL certificates to allow for secure gRPC channels during spot_wrapper.testing driven tests.

[coveralls]

Pull Request Test Coverage Report for Build 8667795090

Details

• 34 of 34 (100.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 96.227%

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Totals
Change from base Build 8482738848:	0.03%
Covered Lines:	1913
Relevant Lines:	1988

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💛 - Coveralls

[mhidalgo-bdai]

I will hold this off until I have a matching PR for https://github.com/bdaiinstitute/spot_ros2 (in the works).

[mhidalgo-bdai]

FTR these certificates and keys are dummy ones. I don't know if we have a policy w.r.t. these nonetheless.

[bhung-bdai]

LGTM. Out of curiosity, does this represent the actual method that is used by Spot during authentication or is it just the next best thing?

[mhidalgo-bdai]

does this represent the actual method that is used by Spot during authentication

This allows us to use the Spot SDK as-is, so if it's not exactly equivalent to what the real robot does, I'd imagine it gets quite close.

[mhidalgo-bdai]

Testing went well here and in bdaiinstitute/spot_ros2#347. Merging!