[mellanox] Block the select function by default in get_transceiver_change_event() (#2422)

* Use default timeout value which will block the select function
* Submodule update for argument type issue in Select class

Submodule update sonic-swss-common:

e8caaea - Align the argument type with epoll_wait() (#255)
3ea133d - [selectable]: Update throw message (#253)

Signed-off-by: Kevin Wang <[email protected]>

Author: kevinwangsk

device/mellanox/x86_64-mlnx_msn2700-r0/plugins/sfputil.py

@@ -176,7 +176,11 @@ def get_transceiver_change_event(self, timeout=0):
         if 'LIVENESS' not in keys:
             return False, phy_port_dict
 
-        (state, c) = self.db_sel.select(timeout)
+        if timeout:
+            (state, c) = self.db_sel.select(timeout)
+        else:
+            (state, c) = self.db_sel.select()
+
         if state == self.db_sel_timeout:
             status = True
         elif state != self.db_sel_object: