Updated SignatureMappings.json.

Added "datastore" attribute to the BasicConnections.json file:

    "datastores": {
        "signature": "SysReadWriteDatastoreObject_001",
        "sysReadWriteDatastoreMap": {
        	"buffer": true,
            "mongodb": true,
            "elasticsearch": true,
            "postgres": false,
            "s3": false,
        }
    },