Bug 573960 - POM and product version change for 4.21 release Change-Id: I62f636d2e30f73795a57f94812f641a90bbb88a1 Signed-off-by: Sravan Kumar Lakkimsetti <sravankumarl@in.ibm.com> Reviewed-on: https://git.eclipse.org/r/c/pde/eclipse.pde.build/+/181382 Tested-by: Vikas Chandra <Vikas.Chandra@in.ibm.com> Reviewed-by: Vikas Chandra <Vikas.Chandra@in.ibm.com>