Bug 578536 - Stop pointing to http://download.eclipse.org

Use https instead

Change-Id: Ie781472c5823e5e668273a2ded56722c1a16edd6
Reviewed-on: https://git.eclipse.org/r/c/pde/eclipse.pde.build/+/190668
Tested-by: PDE Bot <pde-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
7 files changed