Changes

debian-bullseye-titan: sort pkgs alphabetically

Change-Id: Id5e1d6a3a1705234f25e7c346e2fcf1d3741570d

debian-bullseye-titan: install ping

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

Related: OS#4969
Change-Id: I46cf22e7eab7dcd4b3835a8c7aa48654aef6c65a