LU-17477 tests: conf-sanity/48 with debug=0

LU-17477 tests: conf-sanity/48 with debug=0

conf-sanity/48 takes quite long setting 4,5K ACLs.
debug=0 improves this significantly.

Test-Parameters: trivial testlist=conf-sanity env=ONLY=48
Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Change-Id: Ifa39b9efc80b41050a13323474dd19b865cc6273
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/53799
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>