LU-11090 quota: Oops in qsd_config

LU-11090 quota: Oops in qsd_config

It's quota config vs umount race
Remove qsd from the list of fsinfo before
freeing per-quota type data.

Change-Id: Ib7c3a94b3222ffd229da1a384113b3befc19665b
Cray-bug-id: LUS-5896
Signed-off-by: Andriy Skulysh <c17819@cray.com>
Reviewed-on: https://review.whamcloud.com/32715
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alexandr Boyko <c17825@cray.com>
Reviewed-by: Alexander Zarochentsev <c17826@cray.com>
Reviewed-by: Vitaly Fertman <c17818@cray.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>