Update Python module library

[brokoler]

Hello,

I just discovered your project after seeing the initial fork and really like to ability to update multiple switch models via SNMP OIDs.

Your script isn't working anymore because of a deprecated dependency which is easy to fix.

Please replace line 17:

from nornir.plugins.tasks.networking import netmiko_send_command, netmiko_send_config

with following code:

from nornir_netmiko import netmiko_send_command, netmiko_send_config

Netmiko commands were moved to a seperate module.

Best regards