support for 'use-vrf' within 'name_servers' in cisco.nxos.nxos_system module

[riversdev0]

SUMMARY

In Cisco NX-OS, name-servers are configured per VRF. Additionally, name-servers in one VRF can be configured to query from a different source VRF. The current nxos_system module supports configuring name-servers in any desired VRF, but it does not support configuring the use-vrf NX-OS keyword which sources the query from a different VRF.

ISSUE TYPE

• Feature Idea

COMPONENT NAME

nxos_system

ADDITIONAL INFORMATION

Here are some examples of what currently exists:

- name: configure name servers in the default VRF
  cisco.nxos.nxos_system:
    name_servers:
    - 8.8.8.8

will yield this NX-OS config

ip name-server 8.8.8.8

and

- name: configure name servers for a VRF
  cisco.nxos.nxos_system:
    name_servers:
    - {server: 8.8.8.8, vrf: management}

will yield this NX-OS config

vrf context management
  ip name-server 8.8.8.8

But there doesn't seem to be any YAML that will yield this

ip name-server 8.8.8.8 use-vrf management

Therefore, i propose that a new dictionary key be created, use_vrf. The config above could be produced in this way

- name: configure name servers with VRF support
  cisco.nxos.nxos_system:
    name_servers:
    - {server: 8.8.8.8, use_vrf: management}

So that you could even do something like this

- name: configure name servers with VRF support
  cisco.nxos.nxos_system:
    name_servers:
    - {server: 8.8.8.8, vrf: red, use_vrf: blue}

which would yield

vrf context red
  ip name-server 8.8.8.8 use-vrf blue