fix(jsonschema): removes default device deployment restart policy

This default in the deployments was conflicting with the restart policy
set in the package. For example, if you set restart policy = never in
the package and you do not set the policy in the deployment manifest, it
still overrides the package value and sets the default.

Wrike Ticket:  https://www.wrike.com/open.htm?id=1205809047

riocli/jsonschema/schemas/deployment-schema.yaml

@@ -144,7 +144,6 @@ definitions:
                   - always
                   - onfailure
                   - never
-                default: always
               envArgs:
                 type: array
                 items: