This will allow to catch only the slap exceptions.

Drop GET/POST methods

Drop GET/POST methods

Migrate previous actions to the Web Service entry points.

Fixup JSON schema provided by the JSON Forms.

TODO:
- revision parameters
- authentication error handling
- json schema for errors
- performance

As Slapgrid is retrieving the full content of the instance it should
store it so that other recipe can access it directly instead of
querying master

slapgrid: Make json dump consistent when using slaptool

slapobject: dump ip addresses in instance json

slapgrid: update tests to check ip list on instance dump