Spec file: Fix yum.conf installation

Source1 was never defined in the upstream spec file (so building an RPM
would fail).  In Fedora, we use it to override the upstream yum.conf
with our own.  As upstream should rather be distro-agnostic, let's just
stick with the defaults here.

Author: dmnks

yum.spec

@@ -257,14 +257,13 @@ INIT=sysv
 
 make DESTDIR=$RPM_BUILD_ROOT UNITDIR=%{_unitdir} INIT=$INIT install
 
-install -m 644 %{SOURCE1} $RPM_BUILD_ROOT/%{_sysconfdir}/yum.conf
 mkdir -p $RPM_BUILD_ROOT/%{_sysconfdir}/yum/pluginconf.d $RPM_BUILD_ROOT/%{yum_pluginslib}
 mkdir -p $RPM_BUILD_ROOT/%{yum_pluginsshare}
 
 %if %{move_yum_conf_back}
 # for now, move repodir/yum.conf back
 mv $RPM_BUILD_ROOT/%{_sysconfdir}/yum/repos.d $RPM_BUILD_ROOT/%{_sysconfdir}/yum.repos.d
-rm -f $RPM_BUILD_ROOT/%{_sysconfdir}/yum/yum.conf
+mv $RPM_BUILD_ROOT/%{_sysconfdir}/yum/yum.conf $RPM_BUILD_ROOT/%{_sysconfdir}/yum.conf
 %endif
 
 %if %{yum_updatesd}