Disable make clean at the end of configure step in GitLab CI

(cherry picked from commit a1d783bb)
14 jobs for gitlab-ci-dont-run-make-clean-v9_12 in 7 minutes and 30 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #48063
amd64 docker linux

00:00:16

 
  Build
passed build:centos:centos6:amd64 #48064
amd64 docker linux

00:01:58

passed build:centos:centos7:amd64 #48065
amd64 docker linux

00:02:06

passed build:debian:sid:amd64 #48066
amd64 docker linux

00:01:22

passed build:debian:sid:i386 #48067
i386 docker linux

00:02:19

 
  Test
passed install:debian:sid:amd64 #48076
amd64 docker linux

00:02:14

passed systemtest:centos:centos6:amd64 #48072
amd64 docker linux

00:04:39

passed systemtest:centos:centos7:amd64 #48073
amd64 docker linux

00:04:40

passed systemtest:debian:sid:amd64 #48074
amd64 docker linux

00:04:46

passed systemtest:debian:sid:i386 #48075
i386 docker linux

00:04:51

passed unittest:centos:centos6:amd64 #48068
amd64 docker linux

00:00:59

passed unittest:centos:centos7:amd64 #48069
linux amd64 docker

00:00:52

passed unittest:debian:sid:amd64 #48070
amd64 docker linux

00:00:48

passed unittest:debian:sid:i386 #48071
i386 docker linux

00:00:51