Use configuration for fcrepo-camel component

[daniel-dgi]

The url is embarassingly hardcoded at the moment. Use the spring config to setup the fcrepo-camel component using property-placeholders so you can load in the url for the rest endpoint, as well as auth creds, from an external config file.

This applies to both this repo and the camel-service branch of https://github.com/daniel-dgi/migration-utils

[daniel-dgi]

Irrelevant and closed. All work has been rolled into https://github.com/fcrepo4-labs/migration-utils