Hvrp display configuration dhcp

[nielsvanhooy]

Description

added new command in hvrp *DisplayConfigDhcp

Motivation and Context

i needed schema's to extract configuration settings for dhcp

Impact (If any)

no impact.

Checklist:

• [x] I have updated the changelog.
• [x] I have updated the documentation (If applicable).
• [x] I have added tests to cover my changes (If applicable).
• [x] All new and existing tests passed.
• [x] All new code passed compilation.