Make compatible with python 3

Patch is from D264, we were unable to use arc to commit this
so doing it manually.

Thanks for the contribution.

econnman-bin.in

@@ -81,7 +81,7 @@ def dbus_variant_to_str(v):
 def dbus_dict_to_str(d):
     "Help debug by converting a dbus.Dictionary to a string in a shorter form."
     s = []
-    for k, v in d.iteritems():
+    for k, v in d.items():
         s.append("%s=%s" % (k, dbus_variant_to_str(v)))
     return ", ".join(s)
 
@@ -253,7 +253,7 @@ class OfflineModeMonitor(object):
         self.obj.on_del_add(self._deleted)
 
         def on_reply(properties):
-            for name, value in properties.iteritems():
+            for name, value in properties.items():
                 log.debug("property %s: %s", name, value)
                 self._property_changed(name, value)
 
@@ -596,7 +596,7 @@ class ServicesList(object):
     def _service_changed(self, path, properties):
         log.debug("Changed %s: %s", path, dbus_dict_to_str(properties))
         d = self.services[path]
-        for k, v in properties.iteritems():
+        for k, v in properties.items():
             d[k] = v
 
     def _services_changed(self, changed, removed):
@@ -963,7 +963,7 @@ class ServiceView(ObjectView):
             value = bool(value)
             self.immutable = value
             self.auto_connect.disabled = value
-            for w in self.readwrite_list_widget.itervalues():
+            for w in self.readwrite_list_widget.values():
                 w.disabled = value
             self.ipv4_method.disabled = value
             self.ipv4_address.disabled = value
@@ -1155,7 +1155,7 @@ class ServiceView(ObjectView):
 
         conf = self.ipv4_properties["IPv4.Configuration"]
         changed = []
-        for k, v in new.iteritems():
+        for k, v in new.items():
             if conf.get(k) != v:
                 changed.append(k)
         log.debug("Changed IPv4: %s", ", ".join(changed))
@@ -1347,7 +1347,7 @@ class Agent(dbus.service.Object):
         def on_clicked(obj):
             response = {}
             keys = []
-            for name, en in widgets.iteritems():
+            for name, en in widgets.items():
                 conv = self.request_type_conv.get(name, dbus.String)
                 v = conv(en.text)
                 if v:
@@ -1394,7 +1394,7 @@ class Agent(dbus.service.Object):
             bx.pack_end(lb)
 
         widgets = {}
-        for name, desc in fields.iteritems():
+        for name, desc in fields.items():
             decos = ""
             t = desc.get("Type")
             if t and t != "informational":