The permission of /etc/sudoers.d/pgpool should be mode 0440.
# install sudoers.d to allow postgres user to run ip and arping with root privileges without a password
install -d %{buildroot}%{_sysconfdir}/sudoers.d
-install -m 0644 %{SOURCE6} %{buildroot}%{_sysconfdir}/sudoers.d/pgpool
+install -m 0440 %{SOURCE6} %{buildroot}%{_sysconfdir}/sudoers.d/pgpool
# nuke libtool archive and static lib
rm -f %{buildroot}%{_libdir}/libpcp.{a,la}