- Adapt spec file to work nicer with containers, like no systemd

OBS-URL: https://build.opensuse.org/package/show/server:dns/nsd?expand=0&rev=103

nsd.spec

@@ -51,12 +51,12 @@ BuildRequires:  pkgconfig
 BuildRequires:  pwdutils
 BuildRequires:  tcpd-devel
 Requires:       shadow
-Requires(post): coreutils
-Requires(post): findutils
+Requires(post): (coreutils or busybox-coreutils)
+Requires(post): (findutils or busybox-findutils)
 Requires(post): shadow
-Requires(pre):  coreutils
+Requires(pre):  (coreutils or busybox-coreutils)
 Requires(pre):  shadow
-%{?systemd_requires}
+%{?systemd_ordering}
 
 %description
 NSD is a complete implementation of an authoritative domain name server, developed