.github: Move squid vars to common vars (#64436)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64436
Moves the squid variables to our common jinja template so that when we
have to update them they're all in the same place.
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
cc ezyang seemethere malfet lg20987 pytorch/pytorch-dev-infra
Test Plan: Imported from OSS
Reviewed By: malfet, zhouzhuojie
Differential Revision: D30732776
Pulled By: seemethere
fbshipit-source-id: 22e3757c4eec775baa8abbaac2ba2a0c69c2b2a9
