fix: dev: [base-0k] improve copy-pasting compatibility !minor

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

precise/base-0k/hooks/install.d/20-kal-scripts.sh

@@ -10,7 +10,7 @@ set -eux
 if ! [ -e /etc/apt/sources.list.d/kalysto.org.list ]; then
 
     ## Required to fetch our repository in https
-    apt-get install -y --force-yes apt-transport-https
+    apt-get install -y --force-yes apt-transport-https </dev/null
     cat <<EOF > /etc/apt/sources.list.d/kalysto.org.list
 
 ## vlab's shell libraries
@@ -28,4 +28,4 @@ EOF
         -o Dir::Etc::sourceparts="-" -o APT::Get::List-Cleanup="0"
 fi
 
-apt-get install -y --force-yes kal-scripts
+apt-get install -y --force-yes kal-scripts </dev/null