feat: add otel plumbing & grpc instrumentation

[tobert]

Description

This PR adds OpenTelemetry plumbing and gRPC instrumentation to tink. When configured as described in the README, this will cause tink components to emit otel tracing data to the configured service, which enables observability of requests across tink components.

Note: I couldn't seem to avoid updating some dependencies when I made these changes so there are some mostly-unrelated changes due to that, most notably, the Docker library and required API changes.

How Has This Been Tested?

Current tests seem to pass. Still need to add more tests which is why this is a draft PR for now.

How are existing users impacted? What migration steps/scripts do we need?

Currently the only way to trace requests across the tink stack is with logs and we'd like to improve on that.

Checklist:

I have:

• updated the documentation and/or roadmap (if required)
• added unit or e2e tests
• provided instructions on how to upgrade
• move to an otel-launcher that is supported (currently using @tobert's branch)

[tobert]

looks like sonatype-lift bot is over-sensitive to transitive checksums in go.sum

otel-init-go is using the newest version of OpenTelemetry and gRPC, newer than what was here before. Most of the things it's "detecting" are way out in the leaves of dependencies and as far as I can tell, do not actually get included in the binary produced.

[tobert]

Fixing up those build fails, will need another review after @tstromberg :)

[tobert]

While going through OSIE I realized I need to do some work in tink-worker and started that. I can tack that onto this PR or follow up. I should have something to look at in the middle of next week.

[tstromberg]

While going through OSIE I realized I need to do some work in tink-worker and started that. I can tack that onto this PR or follow up. I should have something to look at in the middle of next week.

Let's put that into a follow-up PR.

[codecov]

Codecov Report

Merging #514 (e94c7e9) into master (aaf6a8e) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #514      +/-   ##
==========================================
- Coverage   33.61%   33.59%   -0.02%     
==========================================
  Files          44       44              
  Lines        3385     3387       +2     
==========================================
  Hits         1138     1138              
- Misses       2150     2152       +2     
  Partials       97       97              

Impacted Files	Coverage Δ
cmd/tink-worker/internal/action.go	0.00% <0.00%> (ø)
grpc-server/grpc_server.go	0.00% <0.00%> (ø)

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[tstromberg]

Can you run prettier on the README.md? It seems there is a github action that checks for it:

[warn] README.md
789
[warn] Code style issues found in the above file(s). Forgot to run Prettier?

(cue rant about linting markdown docs...)

[tobert]

I've pushed up the prettier changes @tstromberg

[tstromberg]

Looks like your PR is blocked on #529 (codespell doesn't like your go.mod file) - #530 may need to be merged first.

[tobert]

Wow, fun. This is totally breaking my branch. I'll figure it out.