LU-15053 tests: sanity-quota_13 fix

LU-15053 tests: sanity-quota_13 fix

Scope a case when there are any extra users
with quota limit and non zero usage besides
TSTUSR and TSTUSR2. This is possible when
tests are started with ENABLE_QUOTA=yes.
In a such case each user may have a lock between
OST and QMT depending. Take this into account
in sanity-quota_13. Fix with following failure:

  sanity-quota test_13: @@@@@@ FAIL: 2 cached locks

Test-Parameters: trivial testlist=sanity-quota
Test-Parameters: testlist=sanity-quota env=ONLY=13,ONLY_REPEAT=100
Signed-off-by: Sergey Cheremencev <scherementsev@ddn.com>
Change-Id: Iaf48d0eb80eef0fc5ebc8246e8fac3f9c96563c0
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/55197
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>