Fix simulator and marvin

- Remove additional parantheses in marvin VirtualMachine.create(
- Implement createEntityExtractUrl command for simulator

Signed-off-by: Prasanna Santhanam <tsp@apache.org>
(cherry picked from commit 908df7aabdd7bfca1d0a3c1b39a83111b61ee692)
CLOUDSTACK-3861: Remove s3.enable and swift.enable from global setting.