We can add more features to DNS plugin

[pehlicd]

Yesterday I raised a pull request about listing dns servers feature and I believe we can add more features to DNS plugin. Basically for ex.

m dns add [dns server hostname]
m dns add -m [dns1,dns2,dns3...]

Last one for multi input and we can also have remove;

m dns remove [dns server hostname]
m dns remove -m [dns1,dns2,dns3...]

These are all features come to mind in first step... What are your thoughts?

[rgcr]

Go ahead