auto-t: only wait for wpa_s to get the DPP configuration

As far as wpa_supplicant goes we don't need to test if it can actually
connect to the network, just that it receives the DPP configuration.

autotests/testDPP/connection_test.py

@@ -80,7 +80,7 @@ class Test(unittest.TestCase):
 
         self.wpas.dpp_enrollee_start(uri)
 
-        self.hapd.wait_for_event('AP-STA-CONNECTED 42:00:00:00:00:00')
+        self.wpas.wait_for_event('DPP-CONF-RECEIVED')
 
     def setUp(self):
         self.wd = IWD(True)