srsepc: Update log file output matching

New version of srsEPC improved the information logged during S1 setup
request, which we use to wait for the ENB to be connected.

Change-Id: Ia2338e3161c66ef7c1ab50b024a70de661edc780
diff --git a/src/osmo_gsm_tester/srs_epc.py b/src/osmo_gsm_tester/srs_epc.py
index a33a163..705c7c7 100644
--- a/src/osmo_gsm_tester/srs_epc.py
+++ b/src/osmo_gsm_tester/srs_epc.py
@@ -202,8 +202,8 @@
         return subscriber_id
 
     def enb_is_connected(self, enb):
-        # FIXME: srspec's stdout: "S1 Setup Request - eNB Id 0x66c0", but srsenb.conf has "enb_id = 0x19B"
-        return 'S1 Setup Request - eNB Id' in (self.process.get_stdout() or '')
+        # TODO: match against srsENB config: "S1 Setup Request - eNB Name: srsenb01, eNB id: 0x19"
+        return 'S1 Setup Request - eNB' in (self.process.get_stdout() or '')
 
     def running(self):
         return not self.process.terminated()