VMSS automatic instance repair

[yungezz]

Resource Provider
What is the Azure resource provider your feature is part of?
VMSS

Description of Feature or Work Requested
Support VMSS automatic instance repair. speclet
https://microsoft.sharepoint.com/:w:/t/AzureManagementExperience/Eat9Q3n2AX1LiWKRhkSABgMBYwUnpeo_KpA356xScHdzqg?e=kPpZzs

Minimum API Version Required
What is the minimum API version of your service required to implement your feature?

Swagger Link
will add later.

Target Date
3rd week of March

[yungezz]

HI Xiaojian Xu (@arrownj), pls take this as high priority, thanks.

[yungezz]

released in 2.2.0, close the issue now.