Make endpoints more consistent across create, show, etc
* Make the name option required for create
* Use a common function to fetch services by id, name or type
* Have show work by endpoint id or by service id, type or name
* Have show display all the fields by default
* Remove capability to filter queries by attribute value pairs
Change-Id: Idaa4b8d930ba859fd62de777e44a10b1ed58c79b
Partial-Bug: #1184012
