This patch adds a base jsonschema framework which will be used
by other subsequent patches for adding jsonschema validation
support for Karbor V1 APIs.
This patch adds jsonschema validation for Karbor Plans API.
This patch follows the Cinder-Schema-framework:
https://github.com/openstack/cinder/tree/master/cinder/api/validation
Change-Id: I5a552f33608a924b0a410fdf1b83b7f5c4759aae
Partial-Implements: bp karbor-json-schema-validation