Bug 575782 - POM and product version change for 4.22 release

Change-Id: I2d82f15d84b412825ca7dd3ecee4841e2cbc22fd
Signed-off-by: Kit Lo <kitlo@us.ibm.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform/+/185008
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Sravan Kumar Lakkimsetti <sravankumarl@in.ibm.com>