new_variant: add support for Geralt

BUG=b:270638214
TEST=./new_variant_fulltest.sh geralt
     w/ ignore_cb_template PASS
     w/o ignore_cb_template FAIL

Change-Id: I2a3364889d79ba0813a8371c1b656c6e1a93d1d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/4318905
Tested-by: Knox Chiou <[email protected]>
Commit-Queue: Knox Chiou <[email protected]>
Reviewed-by: Paul Fagerburg <[email protected]>
9 files changed