Add AUTH_LDAP_GROUP_* settings to make group search work
Without this change this line will fail.
Fixes https://code.ornl.gov/sns-hfir-scse/reflectometry/reflectometry/-/issues/307
Without this change this line will fail.
Fixes https://code.ornl.gov/sns-hfir-scse/reflectometry/reflectometry/-/issues/307