Update opentelemetry-collector modules to v0.56.0

[axw]

Motivation/summary

The first commit bumps the OTel module dependencies, and vendored internal/otel_collector code. The second adjusts apm-server code, the bulk of which is just adjusting to API changes, but there are some functional changes noted below. Finally, system tests are updated to the latest OTel SDK.

open-telemetry/opentelemetry-collector-contrib#10273 uncovered an issue where we were recording the "event" tag as a label, when we should have been recording it as the "message" field in some circumstances.

open-telemetry/opentelemetry-proto#373 removed the deprecated LogRecord.Name field. There is no replacement, hence we no longer record event.action.

Checklist

• Update CHANGELOG.asciidoc
  - [ ] Update package changelog.yml (only if changes to apmpackage have been made)
  - [ ] Documentation has been updated

How to test these changes

Check that OpenTelemetry Swift 1.3 works with the server.

Related issues

Closes #8576

[mergify]

This pull request does not have a backport label. Could you fix it @axw? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-7.x is the label to automatically backport to the 7.x branch.
• backport-7./d is the label to automatically backport to the 7./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[apmmachine]

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• Start Time: 2022-08-02T07:49:35.383+0000

• Duration: 25 min 0 sec

Test stats 🧪

Test	Results
Failed	0
Passed	137
Skipped	1
Total	138

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[apmmachine]

📚 Go benchmark report

Diff with the main branch

name                                                            old time/op    new time/op    delta
pkg:github.com/elastic/apm-server/internal/agentcfg goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/decoder goos:linux goarch:amd64
CompressedRequestReader/gzip_sniff-12                             17.6µs ± 2%    13.7µs ±67%  -21.76%  (p=0.032 n=5+5)
pkg:github.com/elastic/apm-server/internal/model/modelindexer goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/processor/stream goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/publish goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/aggregation/spanmetrics goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/aggregation/txmetrics goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/sampling goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/sampling/eventstorage goos:linux goarch:amd64
ReadEvents/json_codec/1000_events-12                              6.48ms ± 2%    6.80ms ± 6%   +4.89%  (p=0.032 n=5+5)
ReadEvents/nop_codec/1000_events-12                                849µs ± 8%     953µs ± 8%  +12.22%  (p=0.032 n=5+5)

name                                                            old alloc/op   new alloc/op   delta
pkg:github.com/elastic/apm-server/internal/agentcfg goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/decoder goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/model/modelindexer goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/processor/stream goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/publish goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/aggregation/spanmetrics goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/aggregation/txmetrics goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/sampling goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/sampling/eventstorage goos:linux goarch:amd64
ReadEvents/json_codec/100_events-12                                751kB ± 0%     750kB ± 0%   -0.06%  (p=0.032 n=5+4)
ReadEvents/nop_codec/399_events-12                                 899kB ± 0%     897kB ± 0%   -0.26%  (p=0.032 n=5+5)

name                                                            old allocs/op  new allocs/op  delta
pkg:github.com/elastic/apm-server/internal/agentcfg goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/decoder goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/model/modelindexer goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/processor/stream goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/internal/publish goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/aggregation/spanmetrics goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/aggregation/txmetrics goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/sampling goos:linux goarch:amd64
pkg:github.com/elastic/apm-server/x-pack/apm-server/sampling/eventstorage goos:linux goarch:amd64

report generated with https://pkg.go.dev/golang.org/x/perf/cmd/benchstat

[mergify]

This pull request is now in conflicts. Could you fix it @axw? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b update-otel-collector upstream/update-otel-collector
git merge upstream/main
git push upstream update-otel-collector

[simitt]

LGTM!

I did not conduct any manual testing, but suggest that we ask mobile developers to test against the changes after merging.

[lahsivjar]

Tested with 8.5.0-BC1 by using opentelemetry-swift examples. APM-Server is able to ingest data: