/var/lib/cobbler/snippets/ is in cobbler-common 2.4.1-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/var/lib/cobbler/snippets/cobbler_register
/var/lib/cobbler/snippets/disable_pxe
/var/lib/cobbler/snippets/download_config_files
/var/lib/cobbler/snippets/download_config_files_deb
/var/lib/cobbler/snippets/func_install_if_enabled
/var/lib/cobbler/snippets/func_register_if_enabled
/var/lib/cobbler/snippets/hosts.xml
/var/lib/cobbler/snippets/kdump.xml
/var/lib/cobbler/snippets/keep_cfengine_keys
/var/lib/cobbler/snippets/keep_files
/var/lib/cobbler/snippets/keep_rhn_keys
/var/lib/cobbler/snippets/keep_ssh_host_keys
/var/lib/cobbler/snippets/kickstart_done
/var/lib/cobbler/snippets/kickstart_start
/var/lib/cobbler/snippets/koan_environment
/var/lib/cobbler/snippets/late_apt_repo_config
/var/lib/cobbler/snippets/log_ks_post
/var/lib/cobbler/snippets/log_ks_pre
/var/lib/cobbler/snippets/main_partition_select
/var/lib/cobbler/snippets/network_config
/var/lib/cobbler/snippets/network_config_esx
/var/lib/cobbler/snippets/network_config_esxi
/var/lib/cobbler/snippets/networking.xml
/var/lib/cobbler/snippets/partition_select
/var/lib/cobbler/snippets/post_anamon
/var/lib/cobbler/snippets/post_install_kernel_options
/var/lib/cobbler/snippets/post_install_network_config
/var/lib/cobbler/snippets/post_install_network_config_deb
/var/lib/cobbler/snippets/post_koan_add_reinstall_entry
/var/lib/cobbler/snippets/post_run_deb
/var/lib/cobbler/snippets/post_s390_reboot
/var/lib/cobbler/snippets/pre_anamon
/var/lib/cobbler/snippets/pre_install_network_config
/var/lib/cobbler/snippets/pre_partition_select
/var/lib/cobbler/snippets/preseed_apt_repo_config
/var/lib/cobbler/snippets/proxy.xml
/var/lib/cobbler/snippets/puppet_install_if_enabled
/var/lib/cobbler/snippets/puppet_register_if_enabled
/var/lib/cobbler/snippets/redhat_register
/var/lib/cobbler/snippets/restore_boot_device
/var/lib/cobbler/snippets/rhn_certificate_based_register
/var/lib/cobbler/snippets/save_boot_device
/var/lib/cobbler/snippets/suse_scriptwrapper.xml