gfs2: amend SLAB_RECLAIM_ACCOUNT on gfs2 related slab cache

As gfs2_quotad_cachep and gfs2_glock_cachep have registered
shrinkers, amending SLAB_RECLAIM_ACCOUNT when creating them,
which improves slab accounting.

Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>