Use _systemdgeneratordir macro for cloud-init-generator handling
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1971480
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=37487242
RPM has _systemdgeneratordir macro used for directory holding systemd generator files. We should use this macro instead of hardcoded path.
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Edited by Miroslav Rezanina