LU-11849 utils: fix to make exclude projid works

LU-11849 utils: fix to make exclude projid works

We intended to use projid not uid here, fix it.
Also add ! --projid options test to cover this.

Test-Parameters: trivial testlist=sanity-quota
Change-Id: I64c3f1c68885947d0e91626525ee037756e1d7d8
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Reviewed-on: https://review.whamcloud.com/34005
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Li Xi <lixi@ddn.com>
Reviewed-by: Gu Zheng <gzheng@ddn.com>