iop: Do not install recommended packages

Do not install recommended packages, they just add unnecessary bloat. In
case any recommended package is needed, it can be specified explicitly.

Add ssh which is recommended by git and needed to clone over ssh (for
developers).

Signed-off-by: Andreas Gnau <andreas.gnau@iopsys.eu>

iop

@@ -102,6 +102,7 @@ git
 automake
 gtk-doc-tools
 jq
+libarchive-zip-perl
 libelf-dev
 liblzo2-dev
 libncurses6
@@ -114,6 +115,7 @@ python3-cryptography
 python3-setuptools
 python3-jsonschema
 rsync
+ssh
 subversion
 svn-buildpackage
 swig
@@ -156,7 +158,7 @@ e2fsprogs
 	echo "Need to install dpkg packages [$needed]"
 	read -p "Do you approve installation of these packages (y/n): " ans
 	if [ "$ans" == "y" ]; then
-	    sudo apt-get update && sudo apt-get install $needed || exit $?
+	    sudo apt-get update && sudo apt-get install --no-install-recommends $needed || exit $?
 	else
 	    echo "can't continue. aborting!"
 	    exit 1