suite: Separate better internal imports and the ones aimed at tests

Change-Id: Ib6f6fa561fbc4ed0d0f255ad54fdfdd823de1a8a
diff --git a/src/osmo_gsm_tester/suite.py b/src/osmo_gsm_tester/suite.py
index dd1baf8..e1bb11a 100644
--- a/src/osmo_gsm_tester/suite.py
+++ b/src/osmo_gsm_tester/suite.py
@@ -23,9 +23,8 @@
 import copy
 import traceback
 import pprint
-from . import config, log, template, util, resource, schema, modem, event_loop, esme, sms
-from . import osmo_nitb
-from . import osmo_hlr, osmo_mgcpgw, osmo_mgw, osmo_msc, osmo_bsc, osmo_stp
+from . import config, log, template, util, resource, schema, event_loop
+from . import osmo_nitb, osmo_hlr, osmo_mgcpgw, osmo_mgw, osmo_msc, osmo_bsc, osmo_stp, modem, esme, sms
 from . import test
 
 class Timeout(Exception):