use system deps in linux CI

[ahornby]

use system deps in linux CI

Speed up the CI by not rebuilding boost et al each time.

Test plan:

regenerate github actions with:

./build/fbcode_builder/getdeps.py --allow-system-packages generate-github-actions --free-up-disk --src-dir=. --os-type=linux --output-dir=.github/workflows folly

build locally with system dependencies

./build/fbcode_builder/getdeps.py --allow-system-packages install-system-deps --recursive folly
./build/fbcode_builder/getdeps.py --allow-system-packages build --src-dir=.  folly

After, its quicker as we can use system boost

---

Stack created with Sapling. Best reviewed with ReviewStack.

• #2074
• -> #2068
• #2084
• #2073

[facebook-github-bot]

@Orvid has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@Orvid has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@Orvid has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@Orvid merged this pull request in facebook/folly@5ee12d7637d172385dc22b2a44d0907abcd4ab6b.