auto-t: GTC

1) Renamed the test to reflect the usage of PEAP
2) Prevented the creation of an extra instance of iwd
3) Refactored to start catching the exceptions and properly
   dispose an instance of iwd
4) Switched to list_devices with wait option

autotests/testEAP-PEAP-GTC/hw.conf

@@ -1,6 +1,6 @@
 [SETUP]
-num_radios=3
-start_iwd=1
+num_radios=2
+start_iwd=0
 max_test_exec_interval_sec=60
 tmpfs_extra_stuff=../misc/certs:eap-user-peap-gtc.text
 

autotests/testEAP-PEAP-GTC/peap_gtc_test.py

@@ -11,13 +11,8 @@ from iwd import NetworkType
 
 class Test(unittest.TestCase):
 
-    def test_connection_success(self):
-        ssid_to_connect = 'ssidEAP-PEAPv1-GTC'
-
-        wd = IWD(True)
-        wd.wait(1)
-
-        devices = wd.list_devices();
+    def validate_connection(self, wd):
+        devices = wd.list_devices(True);
 
         self.assertIsNotNone(devices)
         device = devices[0]
@@ -31,15 +26,9 @@ class Test(unittest.TestCase):
         wd.wait_for_object_condition(device, condition)
 
         ordered_networks = device.get_ordered_networks()
-        ordered_network = None
-
-        for o_n in ordered_networks:
-            if o_n.name == ssid_to_connect:
-                ordered_network = o_n
-                break
-
-        self.assertEqual(ordered_network.name, ssid_to_connect)
+        ordered_network = ordered_networks[0]
 
+        self.assertEqual(ordered_network.name, 'ssidEAP-PEAPv1-GTC')
         self.assertEqual(ordered_network.type, NetworkType.eap)
 
         condition = 'not obj.connected'
@@ -55,6 +44,15 @@ class Test(unittest.TestCase):
         condition = 'not obj.connected'
         wd.wait_for_object_condition(ordered_network.network_object, condition)
 
+    def test_connection_success(self):
+        wd = IWD(True)
+
+        try:
+            self.validate_connection(wd)
+        except:
+            del wd
+            raise
+
         del wd
 
     @classmethod