Ensure libpcap present when using PacketBeat
Ensure libpcap present when using PacketBeat

One of the points of using a package manager is to satisify
system package depdencies so this should really be fixed
in the PacketBeat upstream RPM .spec file.

Let's go ahead and add it here anyway.

fixes: https://github.com/sadsfae/ansible-elk/issues/53

sadsfae/ansible-elk