Merge branch 'chasse_full_ref_slot' into 'master'

always build full reference slot for ci-test, closes #103

Closes #103

See merge request lhcb-core/LbNightlyTools!372
4 jobs for master in 4 minutes and 18 seconds (queued for 15 seconds)
Status Name Job ID Coverage
  Test
passed centos7 #16910113
cvmfs

00:02:43

passed check-formatting #16910116

00:00:15

passed python2.7 #16910114

00:00:49

passed python3.6 #16910115

00:01:33