xfs: test xfs_quota "state" command

xfs: test xfs_quota "state" command

This exercises the xfs_quota "state" command for every
combination of user, group, and project quota enablement
on both crc (with project quota inode on disk) and non-crc
(where project quota overlaps group quota on disk) filesystems.

It currently requires patches to the upstream kernel
("quota: fill in Q_XGETQSTAT inode information for inactive quotas")
and to xfsprogs ("xfs_quota: wire up XFS_GETQSTATV") to pass.

Rather than trying to make it run on older kernels without
crc capability, I restrict the test to crc-capable environments,
but test with and without crcs enabled (and hence with and without
project quota inode on disk).

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>