Merge branch 'gitlab-ci' into 'master'

Add Gitlab CI configuration

See merge request !146
10 jobs for master in 46 minutes and 53 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #4566
Build ASDF

00:03:05

passed #4567
Build docs

00:06:33

 
  Regression
passed #4568
ABCL regression tests

00:35:39

passed #4569
CCL regression tests

00:08:31

passed #4570
ECL regression tests

00:07:47

passed #4571
SBCL regression tests

00:06:02

 
  Upgrade
failed #4572
allowed to fail
ABCL upgrade tests

00:32:17

passed #4573
CCL upgrade tests

00:07:11

passed #4574
ECL upgrade tests

00:21:52

passed #4575
SBCL upgrade tests

00:07:24

 
Name Stage Failure
failed
ABCL upgrade tests Upgrade
; Registering system asdf
;; ASDF, version 3.3.4.5
; Loaded /builds/asdf/asdf/build/fasls/abcl/asdf.abcl (6.568 seconds)
Testing it
Script succeeded
Upgrade test failed for abcl
make: *** [Makefile:191: test-upgrade] Error 1
Cleaning up file based variables
ERROR: Job failed: exit code 1