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>
3 files changed