Remove @definitionName attributes from generated JSON Schema

The component REST service uses an attribute called @definitionName to link sub-properties to properties (in a simplified JSON format described by a JSON Schema).

For example, to call `getSample` on a SimpleFileIODataset:

call: http://localhost:8989/tcomp/runtimes/SimpleFileIoDataset/data

body:

{
    "properties": {
        "format": "CSV",
        "path": "file:///tmp/stuff.csv",
        "@definitionName": "SimpleFileIoDataset"
    },
    "dependencies": [{
        "@definitionName": "SimpleFileIoDatastore",
        "useKerberos": false
    }]
}

The @definitionName is redundant in the first properties (since it is already in the URL call) and fragile in the dependencies (since any value other than the name of the datastore will cause a failure).

This instance data should use the name in the REST endpoint and the properties name (not the definition name) to attach subproperties:

{
    "properties": {
        "format": "CSV",
        "path": "file:///tmp/stuff.csv"
    },
    "dependencies": {
        "datastore" : {
            "useKerberos": false
        }
    }
}