/dev/pts: Add notes from @jerome that we probably need to add gid=5 and other options

slapns.py

@@ -222,6 +222,8 @@ def main():
     xmount("none", "/run", "tmpfs")
 
     # separate instance for pseudo terminals
+    # XXX we might need to add gid=5 and other mounting options:
+    # XXX see https://lab.nexedi.com/kirr/slapns/commit/1c4ae85d#note_68084
     xmount("none", "/dev/pts", "devpts")
 
     if not unshareonly: