432070: change vagrantfiles to use Vagrant.configure("2")

Change-Id: I5ff6c05fe8ae7d4f2f49f405041c587f92c6ae07
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=432070
Signed-off-by: Frank Becker <Frank@Frank-Becker.de>
1 file changed