networkmanager: Add option for overriding DNS settings
networkmanager: Add option for overriding DNS settings

If the option is enabled, the DNS servers from networking.nameservers
will be inserted in /etc/resolv.con and override any DNS servers that
NetworkManager receieves by DHCP, or that is configured manually
in the connection settings.

andreassalomonsson/nixos,NixOS/nixos,NixOS/nixos,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,NixOS/nixos,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,andreassalomonsson/nixos,NixOS/nixpkgs,triton/triton,triton/triton,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixos,NixOS/nixpkgs,NixOS/nixpkgs,andreassalomonsson/nixos,triton/triton,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixpkgs,andreassalomonsson/nixos,SymbiFlow/nixpkgs,NixOS/nixos,triton/triton,NixOS/nixos,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,andreassalomonsson/nixos,triton/triton,andreassalomonsson/nixos,NixOS/nixpkgs,NixOS/nixpkgs