RedDeer 4.0 is compliant enough for pde.ui.smartimport tests so 3.x and
4.x should both be fine.

Change-Id: I4a1d234739d6cc42ccb2a1827f8609efc2ee0383
Reviewed-on: https://git.eclipse.org/r/c/pde/eclipse.pde.ui/+/188819
Tested-by: PDE Bot <pde-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>