ci: add script to help launch stuck codebuild jobs

[lrstewart]

Release Summary:

Description of changes:

We have enough codebuild jobs now that manually launching them, like we have to do when we modify a buildpsec, is very slow and tedious. I was very annoyed trying to get 7220e23 merged.

This just adds a simple script that will launch all the codebuild jobs for you, as long as you have the aws cli setup right. I could put this script somewhere else, but committing it seems like our best bet to keep it up to date.

Call-outs:

I'd love a way to enforce that the script is always up-to-date with all our Codebuild jobs, but I'm not sure how to do that easily 🤔

Testing:

I ran it locally and verified that the builds were successfully launched. Anyone with access to the Codebuild jobs can too, to verify. This is the output of a run:

%  ./codebuild/bin/start_codebuild.sh pr/5004
Builds:
aws --region us-west-2 codebuild start-build-batch --source-version pr/5004
        --project-name AddressSanitizer
aws --region us-west-2 codebuild start-build-batch --source-version pr/5004
        --project-name S2nIntegrationV2SmallBatch
aws --region us-west-2 codebuild start-build-batch --source-version pr/5004
        --project-name Valgrind
aws --region us-west-2 codebuild start-build-batch --source-version pr/5004
        --project-name s2nFuzzBatch
aws --region us-west-2 codebuild start-build-batch --source-version pr/5004
        --project-name s2nGeneralBatch
aws --region us-west-2 codebuild start-build-batch --source-version pr/5004
        --project-name s2nUnitNix
aws --region us-east-2 codebuild start-build-batch --source-version pr/5004
        --project-name Integv2NixBatchBF1FB83F-7tcZOiMDWPH0
aws --region us-west-2 codebuild start-build --source-version pr/5004
        --project-name kTLS
1) Start 8 builds
2) Exit
#? 1
Starting builds...
        "id": "AddressSanitizer:d8ee382f-c514-49c7-bf7c-6e7f85f97c3f",
        "id": "S2nIntegrationV2SmallBatch:03004132-4aa8-49cf-9c8f-409e4513fb94",
        "id": "Valgrind:61ce8e36-5d64-42b3-be2b-eaa2c7b74b70",
        "id": "s2nFuzzBatch:181468d7-ce88-42e2-af70-105871a3d900",
        "id": "s2nGeneralBatch:b85fbb1c-a2eb-4243-97af-892cd5f21c4f",
        "id": "s2nUnitNix:98accd76-0fe3-4cb6-a5ac-d8abb413df5d",
        "id": "Integv2NixBatchBF1FB83F-7tcZOiMDWPH0:1bd41ce3-ac35-4782-a02b-fc53e2eea0d6",
        "id": "kTLS:835eacfc-9ba2-49b6-bba0-65141f4b01f3",
All builds successfully launched.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[jouho]

Tested and confirmed it works. Thank you for adding this!