Accepting request 871208 from home:kukuk:etc

- Use systemd-sysusers only if /proc is mounted, don't require it
- Set --replace option for systemd-sysusers

OBS-URL: https://build.opensuse.org/request/show/871208
OBS-URL: https://build.opensuse.org/package/show/Base:System/sysuser-tools?expand=0&rev=40

macros.sysusers

@@ -7,7 +7,12 @@
 #
 # add %sysusers_requires in the package section
 #
-# add "%sysusers_generate_pre <source file> <account>" to build section
+# add "%sysusers_generate_pre <source file> <account> [<config>]" to build section
+#
+## <source file> is the source file as defined in the spec file header
+## <account> is just a random name, th output file will be "<account>.pre"
+## <config> is the name of the configuration file as stored in
+##          /usr/lib/sysusers.d/<config>
 #
 # add "%pre -f <account>.pre" to spec file
 #
@@ -16,4 +21,4 @@
 %sysusers_requires	Requires(pre): sysuser-shadow
 
 %sysusers_generate_pre()	\
-%{_prefix}/lib/rpm/sysusers-generate-pre  "%1" > "%2".pre
+%{_prefix}/lib/rpm/sysusers-generate-pre  "%1" "%3" > "%2".pre