Add CHANGES entry

4911.	[test]		Improved the reliability of the 'mkeys' system test.
			[GL #128]
5 jobs for 128-fix-mkeys-system-test-race in 11 minutes and 36 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Precheck
passed #3412
linux docker
precheck:debian:sid:amd64

00:00:16

 
  Build
passed #3413
linux docker
build:debian:sid:amd64

00:05:31

passed #3414
linux docker
build:debian:sid:i386

00:05:53

 
  Test
passed #3415
linux docker
test:debian:sid:amd64

00:05:27

passed #3416
linux docker
test:debian:sid:i386

00:05:24