Raise jsonschema requirement to 1.0.0+

jsonschema library version 1.0.0+ supports JsonSchema-Draft4
specification, and blueprint nova-api-validation-fw needs it
for strict API validation.

Change-Id: Ie6f2fec6f71d7cdc4129433606e5a5f4cc81186c
bump cinderclient version to 1.0.4

Heat requires the most recent cinderclient release for backup/snapshot
functionality added in https://review.openstack.org/#/c/28054/

Change-Id: Ic72010587b359addd0ce645558afd986bd295656
Merge "bump cinderclient version to 1.0.4"