Feature Request

Proposal:

Extend ntpq plugin to query a list of servers.

Current behavior:

Currently, ntpq queries only the local host.

Desired behavior:

Ntpq configuration must have a ntp server list.
The plugin must get statistics from all servers by calling "ntpq -p server" or "ntpq -pn server".
If there is no server list, it can use the current behavior i.e. call "ntpq -p"

Use case:

I have a lot of embedded devices that run ntp daemon but currently it is not practical or feasible to run telegraf on these devices.