This fix binds the raid schema to draft-04 of the
json schema. The draft-04 is supported on both
jsonschema 2.6 and jsonschema 3.0.1.
Draft-06 and draft-07 require the schema change
which is incompatible with draft-04.
Story: #2005464
task: 30540
Change-Id: Ic30a0f18982f4da939f0f23eef8a233afea0e41a