MAINT: Register calendar alias at module scope.
MAINT: Register calendar alias at module scope.

Rather than doing it in `make_equity_info`. There are tests that
construct assets with a calendar of `TEST` without using
`WithAssetFinder`, and they fail if they're run before any test that
used `WithAssetFinder`.

humdings/zipline,humdings/zipline,quantopian/zipline,quantopian/zipline