Control ODataModelBuilder initialization

[kbarbounakis]

ODataModelBuilder.initializeSync() is running automatically while application is being initialized.

class ExpressDataApplication extends IApplication {
    constructor(configurationPath) {
        super();
       ...
        this.useModelBuilder();
        ...
    }

...

useModelBuilder() {
        // initialize data model builder
        const builder = new ODataConventionModelBuilder(this.getConfiguration());
        // initialize model builder
        builder.initializeSync();
        // use model convention builder
        this.useStrategy(ODataModelBuilder, function() {
          return builder;
        });
    }

It could be useful to allow manual initialization of model builder.