There's two major parts to this change:
1. cut down on environment variables needed to run the tests:
- lux parameters that don't change are now in code
- most remaining parameters have reasonable defaults
- the only variable that is still required to be set is HASURA_MULTITENANT_SPEC_DB_URL
- env.sh is no longer needed
2. find a better work-around for the problems running graphql-engine-multitenant
via cabal run (https://github.com/haskell/cabal/issues/7914), by adding a shell
script that implements a more correct version of cabal run.
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3461
GitOrigin-RevId: 0939a79cc45cd3c1c103719552b12099678850dd
