Goal: 

• Add user password in image-builder ComposeRequest
• User can define users with password and ssh-key
• Make sure password is not back-readable through API

Acceptance Criteria:

• Verify /compose API accepts users Customizations with password
• Verify Blueprint API accepts users Customizations with password
• Verify /blueprint/<id>/compose builds image with password customizations
• Verify password can not be fetched through API - is filtered in all endpoints:
  • /bluepritnt/<id>
  • /blueprints/<id>/export
  • /composes/<id>