Update Compose file versions to 3.8

[zrhoffman]

This PR updates all of the Compose file versions in the project to version 3.8, which fixes #6276 because 3.8 is greater than the minimum compose file version necessary to support the target option (2.3).

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Which Traffic Control components are affected by this PR?

• Traffic Control Cache Config (T3C, formerly ORT)
• Traffic Monitor
• Traffic Ops
• Traffic Portal
• Traffic Router
• CDN in a Box
• Automation - build system, Ansible

What is the best way to verify this PR?

Test the various Compose files whose versions were updated to 3.8 in this PR:

• cache-config/testing/docker/docker-compose.yml
• experimental/graphql.sample/docker-compose.yml
• infrastructure/ansible/sample.lab/docker-compose.yaml
• infrastructure/cdn-in-a-box/docker-compose.yml
• infrastructure/docker/build/docker-compose.yml
• infrastructure/docker/traffic_ops/docker-compose.yml
• test/fakeOrigin/docker-compose.yml
• tools/golang/docker-compose.yml
• traffic_monitor/tests/_integration/docker-compose.yml
• traffic_ops/app/bin/tests/docker-compose.yml
• traffic_ops_db/test/docker/docker-compose.yml
• traffic_portal/docker/docker-compose.yml
• traffic_router/tests/docker-compose.yml

If this is a bugfix, which Traffic Control versions contained the bug?

• 5.1.3
• 6.0.0
• master

PR submission checklist

• This PR has tests
• Bugfix, no documentation necessary
• No CHANGELOG.md entry necessary
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

[ocket8888]

Also I currently can't build CiaB because of target being unsupported; I've already verified on my own that this change will fix that.

Turns out I was just describing #6276 - I was gonna open an issue for that but it looks like you beat me to it.

[zrhoffman]

Rebased to get and update the compose files added in #6252

[zrhoffman]

Rebased to fix #6283 for the TP GHA now that #6284 is merged

[zrhoffman]

Rebased again to get #6290

[ocket8888]

LGTM: Actions pass, indicating the ones we depend on work, and I've already manually verified this fixes the issue (which I was also experiencing).

[rawlinp]

I can't seem to find the magical docker versions required to use docker-compose files at version 3.8:

$ yum list installed docker*
docker-ce.x86_64                                                                          3:20.10.8-3.el7                                                           @docker-ce-stable
docker-ce-cli.x86_64                                                                      1:20.10.8-3.el7                                                           @docker-ce-stable
docker-ce-rootless-extras.x86_64                                                          20.10.8-3.el7                                                             @docker-ce-stable
docker-scan-plugin.x86_64                                                                 0.8.0-3.el7                                                               @docker-ce-stable

$ docker-compose version
docker-compose version 1.29.2, build 5becea4c
docker-py version: 5.0.0
CPython version: 3.7.10
OpenSSL version: OpenSSL 1.1.0l  10 Sep 2019

$ sudo docker version
Client: Docker Engine - Community
 Version:           20.10.8
 API version:       1.41
 Go version:        go1.16.6
 Git commit:        3967b7d
 Built:             Fri Jul 30 19:55:49 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          20.10.8
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.16.6
  Git commit:       75249d8
  Built:            Fri Jul 30 19:54:13 2021
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.4.12
  GitCommit:        7b11cfaabd73bb80907dd23182b9347b4245eb5d
 runc:
  Version:          1.0.2
  GitCommit:        v1.0.2-0-g52b36a2
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

These are fairly recent versions, but I still get this error:

Version in "././infrastructure/docker/build/docker-compose.yml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a supported version ("2.0", "2.1", "3.0") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.
For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/

The thing is, https://docs.docker.com/compose/compose-file/compose-versioning/ seems to indicate that these versions should be fine.