M058: OOI extern services integration to pyon

M058:
Integration of externalization services to pyon, requires eoi.yml for use [pull request here](https://github.com/ooici/ion-definitions/pull/523). Allows EOI services to piggy page on resource CRUD requests. To actually leverage the services it requires that the [importerService](https://github.com/birdage/ooi-extern/blob/master/importerService.py) be setup and running [correctly](https://github.com/birdage/ooi-extern/blob/master/README.md).

see the following [link](https://confluence.oceanobservatories.org/display/CIDev/M058+OGC+web+services+suite+integration) for confluence page information.