Support `GITLAB_EARLY_AUTH_CHECK` env variable to disable early auth check and disable for acc tests
This change set reduces unnecessary calls to /api/v4/user
from the early auth check from ~2.5k to ~450 for an entire test suite run:
grep "/api/v4/user" -c ce-15.6.6-ce.0-acctest-before.jsonl
449
See !1417 (closed) for prior work on this.
Closes #1361 (closed)
/cc @Alexand
Edited by Timo Furrer