netconfig: add ifupdown on finish-install script

helpers/DATA/netcfg/ifupdown.patch

@@ -0,0 +1,10 @@
+--- netcfg-1.176+11.0trisquel2/finish-install.d/55netcfg-copy-config	2022-11-21 19:21:58.138150737 -0600
++++ netcfg-1.176+11.0trisquel2/finish-install.d/55netcfg-copy-config__	2022-11-21 19:21:50.646130993 -0600
+@@ -22,6 +22,7 @@
+ 	NM_IS_INSTALLED=true
+ else
+ 	NM_IS_INSTALLED=false
++	in-target sh -c "apt-get -y install ifupdown"
+ fi
+ 
+ # The type of the connection used during installation

helpers/make-netcfg

@@ -17,7 +17,7 @@
 #    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 #
 
-VERSION=2
+VERSION=2.1
 EXTERNAL='deb-src http://ftp.debian.org/debian stable main'
 REPOKEY=648ACFD622F3D138
 NETINST=true
@@ -26,6 +26,7 @@ NETINST=true
 rpl "Default: debian" "Default: trisquel" . -R
 sed -i '/client, template,/s/debian/trisquel/g' netcfg-common.c
 patch -p1 < $DATA/restore_network-manager_management.patch
+patch -p1 < $DATA/ifupdown.patch
 
 changelog "Rebranded and adapted for Trisquel"
 compile