linux: standard imports first, then third-party imports

Signed-off-by: Bastian Krause <bst@pengutronix.de>

Author: Bastian-Krause

labgridhelper/linux.py

@@ -1,9 +1,9 @@
-from labgrid.protocol import CommandProtocol
-from labgrid.driver import ExecutionError
-
 import json
 import re
 
+from labgrid.protocol import CommandProtocol
+from labgrid.driver import ExecutionError
+
 def get_systemd_version(command):
     """Returns systemd version retrieved by parsing output of `systemd --version`