Add new type SD_PATH_SEARCH_SYSCTL to the ones that systemd-path already
know.
Before the change:
$ systemd-path | egrep sysctl
sysctl: /usr/lib/sysctl.d
After the change:
$ ./systemd-path | egrep sysctl
search-sysctl: /etc/sysctl.d:/run/sysctl.d:/usr/local/lib/sysctl.d:/usr/lib/sysctl.d
sysctl: /usr/lib/sysctl.d
[SD_PATH_SEARCH_CONFIGURATION_FACTORY] = "search-configuration-factory",
[SD_PATH_SEARCH_STATE_FACTORY] = "search-state-factory",
[SD_PATH_SEARCH_CONFIGURATION] = "search-configuration",
+ [SD_PATH_SEARCH_SYSCTL] = "search-sysctl",
[SD_PATH_SYSTEMD_UTIL] = "systemd-util",