Only check T tracer if EPC has been defined

ci-scripts/ran.py

@@ -383,6 +383,7 @@ class RANManagement():
 
 
 		# If tracer options is on, running tshark on EPC side and capture traffic b/ EPC and eNB
+		if EPC.IPAddress != "none":
 			localEpcIpAddr = EPC.IPAddress
 			localEpcUserName = EPC.UserName
 			localEpcPassword = EPC.Password
@@ -394,6 +395,7 @@ class RANManagement():
 			mySSH.command('echo ' + localEpcPassword + ' | sudo -S rm -f /tmp/' + self.epcPcapFile , '\$', 5)
 			mySSH.command('echo $USER; nohup sudo tshark -f "host ' + lIpAddr +'" -i ' + eth_interface + ' -f "' + fltr + '" -w /tmp/' + self.epcPcapFile + ' > /tmp/tshark.log 2>&1 &', localEpcUserName, 5)
 			mySSH.close()
+
 		mySSH.open(lIpAddr, lUserName, lPassWord)
 		mySSH.command('cd ' + lSourcePath, '\$', 5)
 		# Initialize_eNB_args usually start with -O and followed by the location in repository