Move LookupScsiDisk from platform to VsphereDevicePathResolver.

Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Platform gets DevicePathResolver set on it.

Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Inject DevicePathResolver in factory method.

Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Add MountPersistentDisk to vSphere infrastructure.

Signed-off-by: Rob Day-Reynolds <rdayreynolds@pivotallabs.com>
Remove LookupScsiDisk from platform.

Signed-off-by: Rob Day-Reynolds <rdayreynolds@pivotallabs.com>