/usr/share/ltsp/plugins/ltsp-build-client/Redhat/ is in ltsp-server 5.5.1-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/001-set-arch
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/009-mock-chroot
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/010-chroot-creator
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/010-etc-hosts
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/010-mount-proc
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/010-set-resolver
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/020-cleanup-chroot
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/020-rootpath
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/030-fat-client
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/031-prepare-kernel
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/032-chroot-setup
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/035-update-kernels
/usr/share/ltsp/plugins/ltsp-build-client/Redhat/095-rootpass