[releng] Copy custom pacman.conf to airootfs

configs/releng/build.sh

@@ -97,6 +97,8 @@ make_setup_mkinitcpio() {
 make_customize_airootfs() {
     cp -af ${script_path}/airootfs ${work_dir}/x86_64
 
+    cp ${script_path}/pacman.conf ${work_dir}/x86_64/airootfs/etc
+
     curl -o ${work_dir}/x86_64/airootfs/etc/pacman.d/mirrorlist 'https://www.archlinux.org/mirrorlist/?country=all&protocol=http&use_mirror_status=on'
 
     lynx -dump -nolist 'https://wiki.archlinux.org/index.php/Installation_Guide?action=render' >> ${work_dir}/x86_64/airootfs/root/install.txt