Need custom "origin" support for Cisco devices

[miott]

• origin - a field which MAY be used to disambiguate the path if necessary. For example, the origin may be used to indicate which organization defined the schema to which the path belongs.

Cisco devices support OpenConfig models, IETF models, and native Cisco models. The devices require the client to populate the "origin" field in order to disambiguate the path when trying to configure resources. The "origin" field needs to be available for setting in the playbook so that it can be assigned to the Path message.