Set symlink atime and ctime to mtime
This mimics the file logic and avoids nonsense values.  Found via
pjdfstests.
@@ -77,6 +77,8 @@ func NewSymlinkInode(
Uid: attrs.Uid,
Gid: attrs.Gid,
Mode: attrs.Mode,
+ Atime: o.Updated,
+ Ctime: o.Updated,
Mtime: o.Updated,
},
target: o.Metadata[SymlinkMetadataKey],
