MESH-16 Fine tune admin privileges for subdomains

[hr2904]

Change description

Changed bootstrap policy to allow admins for super domains only , not sub-domains.
This gives admin , delete permission for all domains, but CRU permissions for superdomains only by default.

Type of change

• New improvement (adds functionality)

Related issues

Fix #1
TestCases

Checklists

Development

• Lint rules pass locally
• Application changes have been tested thoroughly
• Automated tests covering modified code pass

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

Code review

• Pull request has a descriptive title and context useful to a reviewer. Screenshots or screencasts are attached as necessary
• "Ready for review" label attached and reviewers assigned
• Changes have been reviewed by at least one other contributor
• Pull request linked to task tracker where applicable