Socket: permission denied on ping

[asiffer]

In some cases, the ping module is likely to fail (even run as root):

Error(s) occurred while pinging 192.168.0.0/24:error while pinging 192.168.0.1: socket: permission denied

Group IDs which are allowed to create ICMP echo sockets may be restricted (net.ipv4.ping_group_range sysctl). Maybe we could check if the user running the agent is on a authorized group. Otherwise we can modify the sysctl during the run (with this library for instance).

See prometheus-community/pro-bing#83 for more details.