tests: Replace is_connected() with is_registered()
API was renamed and old name deprecated, let's use it everywhere.
Change-Id: Ic91dddcfd1a5a17c35d15a8a14628b3923229523
diff --git a/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py b/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
index d90c80b..d84c078 100755
--- a/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
+++ b/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
@@ -26,7 +26,7 @@
proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_DL, ue.netns(), bitrate=max_rate)
print('waiting for UE to attach...')
-wait(ue.is_connected, None)
+wait(ue.is_registered, None)
print('UE is attached')
print("Running iperf3 client to %s through %s" % (str(iperf3cli), ue.netns()))