Summary: Most of the build and phabricator build is now moved to K8s. Only BPF tests (VM)  and CLI mac signing (mac) run outside.

Test Plan: Tested extensively, though I still expect some instabilities.

Reviewers: vihang, michelle, oazizi, #engineering

Reviewed By: vihang, #engineering

JIRA Issues: PP-1769

Differential Revision: https://phab.corp.pixielabs.ai/D6816

GitOrigin-RevId: bd72c16669ef8965c42887cc4163b41768953d34