auto-t: Add WPS tests for StartPin method

This adds two additional test scenarios (using 4 digit and 8 digit
PINs) for testing the StartPin method of the WiFiSimpleConfiguration
interface.

autotests/testEAP-WPS/hw.conf

@@ -1,5 +1,6 @@
 [SETUP]
 num_radios=2
+max_test_exec_interval_sec=40
 
 [HOSTAPD]
 rad0=ssidWPS.conf

autotests/testEAP-WPS/wps_test.py

@@ -14,6 +14,8 @@ from hostapd import hostapd_map
 class Test(unittest.TestCase):
 
     def test_push_button_success(self):
+        self.hostapd.wps_push_button()
+
         wd = IWD()
 
         devices = wd.list_devices(1);
@@ -29,14 +31,47 @@ class Test(unittest.TestCase):
         condition = 'obj.state == DeviceState.disconnected'
         wd.wait_for_object_condition(device, condition)
 
+    def test_pin_success(self):
+        wd = IWD()
+
+        devices = wd.list_devices(1);
+        device = devices[0]
+        pin = device.wps_generate_pin()
+        self.hostapd.wps_pin(pin)
+
+        device.wps_start_pin(pin)
+
+        condition = 'obj.state == DeviceState.connected'
+        wd.wait_for_object_condition(device, condition)
+
+        device.disconnect()
+
+        condition = 'obj.state == DeviceState.disconnected'
+        wd.wait_for_object_condition(device, condition)
+
+    def test_4_digit_pin_success(self):
+        wd = IWD()
+
+        devices = wd.list_devices(1);
+        device = devices[0]
+        pin = '1234'
+        self.hostapd.wps_pin(pin)
+
+        device.wps_start_pin(pin)
+
+        condition = 'obj.state == DeviceState.connected'
+        wd.wait_for_object_condition(device, condition)
+
+        device.disconnect()
+
+        condition = 'obj.state == DeviceState.disconnected'
+        wd.wait_for_object_condition(device, condition)
 
     @classmethod
     def setUpClass(cls):
         cls.hostapd_if = list(hostapd_map.values())[0]
         cls.hostapd = HostapdCLI(cls.hostapd_if)
 
-        cls.hostapd.wps_push_button()
-
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()