Adding support for multiple tables with same name across different databases

[dasilva333]

Also as part of the change this need to be included as well:
dasilva333/sails-mysql@ae67aed

[tjwebb]

Can you document how this feature would work?

[dasilva333]

It seems there is an issue with waterline/sails-mysql/waterline-sequel to reproduce the problem try the following steps:

1. create a database called 'cats' in mysql
2. create another database called 'dogs' in mysql
3. create a table called owners in both databases.
4. Attempt to load those two models
5. Verify it does not work with and without the identity property on the model

The solution I came up with might not be the ideal solution because it required me to assign an identity property to every model before I load it like this:

modelObject.identity = modelObject.connection.toLowerCase()+"_"+modelObject.tableName.toLowerCase();

and then later to:

orm.loadCollection(Waterline.Collection.extend(modelObject));

Basically I'm submitting my solution but also suggesting someone else look further into this simple and reproducible problem with the code.

[dasilva333]

Also of note this ticket was also reported elsewhere on the parent project:
https://github.com/balderdashy/sails-mysql/issues/171

[kai23]

As reported on the parent project, adding an identity « works » great, but fail on populate.