Cidevsa 501 refactor 2 svc methods into usual methods

* Aligns the data_process_management() to use the new svc methods
* Fixes some tests and gets them to pass.

DEPENDS ON [https://github.com/ooici/ion-definitions/pull/331](https://github.com/ooici/ion-definitions/pull/331); DO NOT MERGE UNTIL THIS IS MERGED.