fix tester

1 job for devel in 30 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Test
failed shellcheck #35
container

00:00:30

 
Name Stage Failure
failed
shellcheck Test There has been a runner system failure, please try again
In ./sync/test.sh line 3:
source "$(dirname "$0")/common"
^----------------------^ SC1090: Can't follow non-constant source. Use a directive to specify location.

For more information:
https://www.shellcheck.net/wiki/SC1090 -- Can't follow non-constant source....
Cleaning up file based variables
Running cleanup_file_variables in runner helper
ERROR: Job failed (system failure): exit status 2