pithos: Adjust glue for XSEG dynamic port allocation

XSEG now supports dynamic port allocation. Pithcat instances can run
simultaneously by utilizing this new feature providing support for
Archipelago volumes.

snf-pithos-backend/pithos/workers/glue.py

@@ -91,7 +91,7 @@ class WorkerGlue(object):
                     self.cnt += 1
                     return ioctx
                 elif self.worker_id is None:
-                    ioctx = Xseg_ctx(self.segment, 200)
+                    ioctx = Xseg_ctx(self.segment)
                     return ioctx
 
             def _pool_verify(self, poolobj):