Merge branch 'bug_3714' into 'master'

Fix for bug #3714

See merge request !117 (merged)

(cherry picked from commit 76e64f52)

9a294607 Fix for bug #3714. All LRMS bakends should report finished jobs through gm-kick. 088cd5a8 Adjusting test to way jobs are kicked.

Since the original merge request (!117 (merged)) was reverted (!133 (merged)) - this merge request needs to be reapplied. @andrii has a fix for the missing part related to the python-slurm backend (!165 (merged)).