(mandatory if we use CoCo 0.10.0)

Ability to provide bootstrap configuration like KBS address, certificates, agent policies etc as pod annotation.

Ref: https://github.com/confidential-containers/cloud-api-adaptor/blob/main/src/cloud-api-adaptor/docs/initdata.md 

• Investigate upgrade requirements from a 1.7.0 created pod vm image to 1.8.0 pod vm image w.r.to initData requirements. Can the old image work with 1.8.0 code ?
• Add documentationHCIDOCS-532
• Tests
•