adapted migration tool accordingly to correct usage of vfs

Conflicts:
	drools-wb-jcr2vfs-migration/drools-wb-jcr2vfs-migration-core/src/main/java/org/drools/workbench/jcr2vfsmigration/migrater/util/MigrationPathManager.java
	drools-wb-jcr2vfs-migration/drools-wb-jcr2vfs-migration-core/src/main/java/org/drools/workbench/jcr2vfsmigration/vfs/IOServiceFactory.java