Merge branch 'devel' into 118-asynchronous-cdo-operations

.gitlab-ci.yml

maestro/drc.c

maestro/pool.c

tests/Makefile.am

tests/check_ecmwf_attr.sh.in

tests/check_ecmwf_events.sh.in

tests/check_ecmwf_handle.sh.in

tests/check_pm_declare.sh.in

tests/check_pm_declare_group.sh.in

tests/check_pm_interlock.sh.in

tests/check_subscribe.sh.in

tests/ecmwf_events_consumer.c

tests/ecmwf_events_producer.c