Iosxe show run dhcp and show run ip route

[nielsvanhooy]

Description

added 2 new commands in IOSXE *ShowRunIpRoute *ShowRunDhcp

Motivation and Context

i needed schema's to extract configuration settings for dhcp and for static ip routes. where other commands where insufficient

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.