showcases: pcaprecording: added protocol to pcap filename where missing

It's more clear which file captures what.

Author: adamgeorge309

showcases/general/pcaprecording/omnetpp.ini

@@ -36,14 +36,14 @@ network = PcapRecordingShowcase
 
 # pcap recorder settings
 *.host1.numPcapRecorders = 1
-*.host1.pcapRecorder[0].pcapFile = "results/host1.pcap"
+*.host1.pcapRecorder[0].pcapFile = "results/host1.80211.pcap"
 
 *.host2.numPcapRecorders = 1
 *.host2.pcapRecorder[0].pcapFile = "results/host2.arp.pcap"
 *.host2.pcapRecorder[0].packetFilter = expr(has(ArpPacket))
 
 *.ethHost1.numPcapRecorders = 1
-*.ethHost1.pcapRecorder[*].pcapFile = "results/ethHost1.pcap"
+*.ethHost1.pcapRecorder[*].pcapFile = "results/ethHost1.eth.pcap"
 
 *.router1.numPcapRecorders = 2
 *.router1.pcapRecorder[0].moduleNamePatterns = "ppp[*]"