LU-17349 tests: sanity-quota_81 decrease timeout

LU-17349 tests: sanity-quota_81 decrease timeout

Decrease cfs fail timeout in sanity-quota_81 from 30
to 10 seconds to avoid soft lockup.

Lustre-change: https://review.whamcloud.com/53384
Lustre-commit: b58219ef1edebcb266cbe0dfede491ba5de491d1

Fixes: 862f0baa7c21 ("LU-15097 quota: stop pool_recalc before killing pool")
Test-Parameters: trivial testlist=sanity-quota
Signed-off-by: Sergey Cheremencev <scherementsev@ddn.com>
Change-Id: I8630db7b3948b335fef5d5349f960f79cb877fc3
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/53516
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>