Bug 1154678 - [EAP6] - Newly created datasource is not enabled even when you have set Enabled=true -- user should be at least warned

When the datasource was created, the 'enabled' attribute was supplied to the EAP6 management interface.
But setting the attribute to true does not enable the datasource. An extra server reload is needed.
To enable a datasource without a server reload, the 'enable' operation needs to be called.

So now the DatasourcesComponent class:
-> no longer supplies the 'enabled' attribute to the CreateResourceDelegate
-> reads the state of the datasource after creation
-> invokes the 'enable' or 'disable' operation (as needed) after creation