auto-t: release radio/hostapd instances from cls

The cls object is part of the unittest framework and its lifespan
is out of test-runner's control. Setting objects into the cls
object sometimes keeps those objects around longer than desired.
Its best to unset anything set in cls when the test is tore down.

autotests/testEAP-WPS-Frag/wps_frag_test.py

@@ -38,6 +38,7 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.hostapd = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testEAP-WPS/four_digit_pin_test.py

@@ -43,6 +43,7 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.hostapd = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testEAP-WPS/pin_test.py

@@ -46,6 +46,7 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.hostapd = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testEAP-WPS/push_button_test.py

@@ -41,6 +41,7 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.hostapd = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testFT-8021x-roam/connection_test.py

@@ -143,6 +143,8 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.bss_radio = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testFT-FILS-SHA256/connection_test.py

@@ -174,6 +174,8 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.bss_radio = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testFT-FILS-SHA384/connection_test.py

@@ -174,6 +174,9 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.bss_radio = None
+
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testFT-PSK-over-DS/connection_test.py

@@ -147,6 +147,8 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.bss_radio = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testFT-PSK-roam/connection_test.py

@@ -140,6 +140,8 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.bss_radio = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)

autotests/testFT-SAE-roam/connection_test.py

@@ -197,6 +197,8 @@ class Test(unittest.TestCase):
     @classmethod
     def tearDownClass(cls):
         IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.bss_radio = None
 
 if __name__ == '__main__':
     unittest.main(exit=True)