Move timezone settings up to network level

Time zone used to be configurable per-BTS. In the upcoming MSC-split, no BTS
structures will be available on the MSC level. To simplify, drop the ability to
manage several time zones in a core network and place the time zone config on
the network VTY level, i.e. in gsm_network. If we are going to re-add fine
grained time zone settings, it should probably be tied to the LAC.

Adjust time zone VTY config code (to be moved to libcommon-cs in subsequent commit).

Adjust time zone Ctrl Interface code.

Change-Id: I69848887d92990f3d6f969be80f6ef91f6bdbbe8
diff --git a/openbsc/tests/ctrl_test_runner.py b/openbsc/tests/ctrl_test_runner.py
index bed685a..4fd831f 100644
--- a/openbsc/tests/ctrl_test_runner.py
+++ b/openbsc/tests/ctrl_test_runner.py
@@ -331,41 +331,41 @@
         self.assertEquals(r['value'], 'state=off,policy=on')
 
     def testTimezone(self):
-        r = self.do_get('bts.0.timezone')
+        r = self.do_get('timezone')
         self.assertEquals(r['mtype'], 'GET_REPLY')
-        self.assertEquals(r['var'], 'bts.0.timezone')
+        self.assertEquals(r['var'], 'timezone')
         self.assertEquals(r['value'], 'off')
 
-        r = self.do_set('bts.0.timezone', '-2,15,2')
+        r = self.do_set('timezone', '-2,15,2')
         self.assertEquals(r['mtype'], 'SET_REPLY')
-        self.assertEquals(r['var'], 'bts.0.timezone')
+        self.assertEquals(r['var'], 'timezone')
         self.assertEquals(r['value'], '-2,15,2')
 
-        r = self.do_get('bts.0.timezone')
+        r = self.do_get('timezone')
         self.assertEquals(r['mtype'], 'GET_REPLY')
-        self.assertEquals(r['var'], 'bts.0.timezone')
+        self.assertEquals(r['var'], 'timezone')
         self.assertEquals(r['value'], '-2,15,2')
 
         # Test invalid input
-        r = self.do_set('bts.0.timezone', '-2,15,2,5,6,7')
+        r = self.do_set('timezone', '-2,15,2,5,6,7')
         self.assertEquals(r['mtype'], 'SET_REPLY')
-        self.assertEquals(r['var'], 'bts.0.timezone')
+        self.assertEquals(r['var'], 'timezone')
         self.assertEquals(r['value'], '-2,15,2')
 
-        r = self.do_set('bts.0.timezone', '-2,15')
+        r = self.do_set('timezone', '-2,15')
         self.assertEquals(r['mtype'], 'ERROR')
-        r = self.do_set('bts.0.timezone', '-2')
+        r = self.do_set('timezone', '-2')
         self.assertEquals(r['mtype'], 'ERROR')
-        r = self.do_set('bts.0.timezone', '1')
+        r = self.do_set('timezone', '1')
 
-        r = self.do_set('bts.0.timezone', 'off')
+        r = self.do_set('timezone', 'off')
         self.assertEquals(r['mtype'], 'SET_REPLY')
-        self.assertEquals(r['var'], 'bts.0.timezone')
+        self.assertEquals(r['var'], 'timezone')
         self.assertEquals(r['value'], 'off')
 
-        r = self.do_get('bts.0.timezone')
+        r = self.do_get('timezone')
         self.assertEquals(r['mtype'], 'GET_REPLY')
-        self.assertEquals(r['var'], 'bts.0.timezone')
+        self.assertEquals(r['var'], 'timezone')
         self.assertEquals(r['value'], 'off')
 
     def testMcc(self):