Add support for 20.17 - Process status updates

[larslilja]

Problem Statement

in 20.17 there is a new progress and services overview we should be able to query to get exact status on where the SD-WAN Manager is in the boot up process.

Proposed Solution

Please describe what you envision the solution to this problem would look like.

Alternatives Considered

Please briefly describe which alternatives, if any, have been considered, including merits of alternate approaches and
tradeoffs being made.

Additional Context

Please provide any other information that may be relevant.