s3: VFS: glusterfs: Reset nlinks for symlink entries during readdir

On receiving an already initialized stat_ex buffer for readdir() call we invoke readdirplus() GlusterFS API, an optimized variant of readdir(), which then returns stat information along with dir entry result. But for symlink entries we don't know if link or target info is needed. In that case it is better to leave this decision back to caller by resetting nlinks value inside stat information to make it invalid.

This was also preventing us from displaying msdfs link as directories inside the share.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14182

Signed-off-by: Anoop C S anoopcs@redhat.com