Issue-401,402,403,404: Add blob storage for data endpoints

Type of change

• Bug Fix
• [] Feature

Does this introduce a change in the core logic?

• [Yes]

Does this introduce a change in the cloud provider implementation, and if so which cloud?

• AWS
• Azure
• GCP
• IBM

Does this introduce a change that must be documented in the README.md file?

• [No]

Updates description?

• Add blob service interface
• Implement blob storage service for azure
• Change data endpoints to use new blob storage service
• Add tests
• Closes issues #401 (closed) #402 (closed) #403 (closed) #404 (closed)