engine: fixed compile error in VDS.java

commit b5d64087e715f0df6eff7c8a66425ea1579cfeeb introduced an @Override
in the wrong place, causing compilation failure. Fixed.

Change-Id: Id5cdc8a68defe03bcdde3b5c444df6a14bdc4feb
Signed-off-by: Greg Sheremeta <gshereme@redhat.com>