Bug 575782 - POM and product version change for 4.22 release

Change-Id: I5e21752f8d0b6176f4ce550961b3ed0a8a611f8b
Signed-off-by: Kit Lo <kitlo@us.ibm.com>
Reviewed-on: https://git.eclipse.org/r/c/equinox/rt.equinox.p2/+/185022
Tested-by: Sravan Kumar Lakkimsetti <sravankumarl@in.ibm.com>
Reviewed-by: Sravan Kumar Lakkimsetti <sravankumarl@in.ibm.com>
64 files changed