Indexes should create N1QL indexes

[CelsoSantos]

What you are doing?

Defining an index on models

indexes: {
    refDocs: {
		getByEmail: {
			keys: ['email'],
			required: false
		},
		getByHash: {
			keys: ['hash'],
			required: false
		},
		getByFacebookId: {
			keys: ['facebook.id'],
			required: false
		}
             }
    }

What do you expect to happen?

These indexes should also create a N1QL index.
There should be a way to define the N1QL indexes using a similar instruction by 1 of 2 options:

1. Get rid of refDocs and, by default, indexes get created via refDoc and N1QL index
2. Create a n1qlIdx property and allow definition of index creation there

What is actually happening?

Just the refDoc gets created.

Couchbase SDK version: 2.2.2
Couchbase Server version: 4.5 CE
CouchbaseODM version/branch: 1.0.1