Revert "Basic support for building in cgroups with remote store."

This reverts commit d3bf2b1989f0e7384d0f162ec2aa6a31dd1754e6.
Revert "Revert "Basic support for building in cgroups with remote store.""

This reverts commit 0bdd0e8739d1e71bec5b4d2bfc975620d82ccb89.
Revert "Basic support for building in cgroups with remote store."

This reverts commit d3bf2b1989f0e7384d0f162ec2aa6a31dd1754e6.
Revert "Add joinCgroup operation to worker-protocol (and increase its minor)."

This reverts commit e3747d755f13d7d188ed30d5c9fdabd5932ef8ee.