feat: configure KAS address explicitly in agent bootstrapping

Description

• feat: configure KAS address explicitly in agent bootstrapping

This change set configures the KAS address explicitly during the agent bootstrapping. This adds support for GitLab self-managed.

How has this been tested?

unit tests, exploratory ..

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation
• Chore (Related to CI or Packaging to platforms)
• Test gap