master
tests: (lsns) add a case testing -Q, --filter option
lsns: add columns for parent namespaces and owner namespaces
tests: (lsns::ioctl_ns) record stdout/stderr for debugging the case
tests: (lsns) verify the code finding an isolated netns via socket
lsns: add a case for testing netnsid column
tests: (lsns) verify NETNSID column for namespaces with no process running
lsns: add a case for testing nsfs column