Summary:
Two tasks are defined
1. Import to import the OSS cluster
2. Migration to make it YBA universe compliant.

YNP also changed to support the ability to add sudoers for some customers.

Note: Only V1 API is added for the very short timeline.

Test Plan:
Manually tested on an in-house cluster created exactly like customers.

{F360477}

{F360478}

Tried restart universe, stop start node after the import.

Reviewers: yshchetinin, svarshney, nbhatia

Reviewed By: yshchetinin

Subscribers: dshubin, yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D44386