MINUID and MINGID should match the values UID_MIN and GID_MIN in
/etc/login.defs to be consistent and to not distribute uids and gids
used by the linux system.

However, we can't simply change values to 1000 since on upgraded systems
that keep using UIDs 501+ and haven't changed /var/yp/Makefile, the Makefile
would actually be updated and UIDs lower than 1000 won't be included in maps.

Thus, we will read MINUID and MINGID values from /etc/login.defs

RHBZ#1004090

diff -up ypserv-2.31/scripts/ypMakefile.in.minuid ypserv-2.31/scripts/ypMakefile.in
--- ypserv-2.31/scripts/ypMakefile.in.minuid	2013-09-04 13:29:12.294945130 +0200
+++ ypserv-2.31/scripts/ypMakefile.in	2013-09-04 13:31:07.308820321 +0200
@@ -37,8 +37,10 @@ YPPUSH_ARGS =
 # the passwd file. If no entry is found, this shadow entry is
 # ignored.
 # MINGID is the lowest gid that will be included in the group maps.
-MINUID=500
-MINGID=500
+# You can either set values directly (e.g. MINUID=1000) or pick up
+# current values from /etc/login.defs
+MINUID=$(shell TMP=`egrep '^UID_MIN\s+[0-9]+' /etc/login.defs|sed -e 's/^UID_MIN//'` ; [ -n "$$TMP" ] && echo "$$TMP" || echo 1000)
+MINGID=$(shell TMP=`egrep '^GID_MIN\s+[0-9]+' /etc/login.defs|sed -e 's/^GID_MIN//'` ; [ -n "$$TMP" ] && echo "$$TMP" || echo 1000)
 
 # Don't export this uid/guid (nfsnobody).
 # Set to 0 if you want to