2.2.7: Merge pull request #368 from HSF/dev
(1) Add function to run shell command with timeout
(2) add function to convert MapResult to dict, for json dump and load
(3) update iDDS health check, to provide labels for k8s live probe
(1) Add function to run shell command with timeout
(2) add function to convert MapResult to dict, for json dump and load
(3) update iDDS health check, to provide labels for k8s live probe