[Feature]: Add Client IP Preservation properties to Application Gateway Backend Settings and Probe CLI. Update Cli commands

[akshimittal1310]

Related command

For enableL4ClientIpPreservation:

az network application-gateway settings create
az network application-gateway settings show
az network application-gateway settings update

For enableProbeProxyProtocolHeader:

az network application-gateway probe create
az network application-gateway probe show
az network application-gateway probe update

Resource Provider
Microsoft.Network/applicationGateways

Description of Feature or Work Requested
Currently, the CLI for Application Gateway backend settings and probe do not support the newly introduced properties: enableL4ClientIpPreservation (settings) and enableProbeProxyProtocolHeader (probe). These properties have already been added to Swagger and PS.
We want to have similar support in CLI for announcing GA and having parity among all clients. This will finish the entire release process across all clients.

Minimum API Version Required
2025-01-01 (It is the Swagger Version where Properties are introduced)

Swagger PR link / SDK link
Swagger PR

Powershell PR

Request Example
You can refer to Swagger new Properties added in Backend Settings and Probe in Application gateway. Please note that backend settings is different from Backend HTTP Settings

Target Date
2025-31-11

PM Contact
jaysoni@microsoft.com

Engineer Contact
akshimittal@microsoft.com

[yonzhan]

Thank you for opening this issue, we will look into it.