Add ping, so ttcn3-tcpdump-start.sh from osmo-ttcn3-hacks.git works as expected. It is supposed to wait until tcpdump is properly capturing packets, by generating dummy packets with ping and waiting until the pcap file gains size. However since ping is currently not installed, it will just wait 10 seconds before executing tests.
Fix for: Waiting for packet dumper to start... 0 Waiting for packet dumper to start... 1 Waiting for packet dumper to start... 2 Waiting for packet dumper to start... 3 Waiting for packet dumper to start... 4 Waiting for packet dumper to start... 5 Waiting for packet dumper to start... 6 Waiting for packet dumper to start... 7 Waiting for packet dumper to start... 8 Waiting for packet dumper to start... 9
