Don't force version of postgresql

Latest Ubuntu LTS did not have version 9.6 at the time of this commit

install/03_debian.sh

@@ -9,4 +9,4 @@ sudo apt-get update
 if [ "${ARCH}" == "x86_64" ] ; then
     sudo apt-get install -y --force-yes libc6:i386 libgcc1:i386 libxft2:i386 libxss1:i386 libcairo2:i386
 fi
-sudo apt-get install -y --force-yes autoconf automake curl exuberant-ctags gcc git gnat gtkwave kate lcov libacl1 libacl1-dev libarchive-dev libattr1 libattr1-dev libbonoboui2-0 libdbd-sqlite3-perl libdbi-perl libfile-copy-recursive-perl libglib2.0-0 libgnome2-0 libgnome2-perl libgnome2-vfs-perl libgnomeui-0 libgnomevfs2-0 libgnomevfs2-common libgtk2-gladexml-perl libgtk2-perl libgraphviz-dev libmono-system-data-linq4.0-cil libmono-system-numerics4.0-cil libmono-system-runtime-serialization-formatters-soap4.0-cil libmono-system-runtime4.0-cil libmono-system-web4.0-cil libmono-system-xml4.0-cil libmono-system4.0-cil libsqlite3-dev libtool libxenomai-dev libxml-libxml-perl libxml-libxml-simple-perl libxml-parser-perl libxml2-dev libxslt1-dev libzmq3-dev mono-mcs mono-reference-assemblies-2.0 mono-runtime nedit net-tools pgadmin3 postgresql-9.6 postgresql-client-9.6 postgresql-client-common postgresql-common python-antlr python-coverage python-gtk2-dev python-jinja2 python-lxml python-matplotlib python-pexpect python-pip python-ply python-psycopg2 python-pygraphviz python-pyside python3-pip qemu-system sqlite3 sudo tk8.5 tree vim-gtk wmctrl xenomai-system-tools xmldiff xpdf xterm xterm zip openjdk-8-jre libc6-dev-i386 python3-lxml
+sudo apt-get install -y --force-yes autoconf automake curl exuberant-ctags gcc git gnat gtkwave kate lcov libacl1 libacl1-dev libarchive-dev libattr1 libattr1-dev libbonoboui2-0 libdbd-sqlite3-perl libdbi-perl libfile-copy-recursive-perl libglib2.0-0 libgnome2-0 libgnome2-perl libgnome2-vfs-perl libgnomeui-0 libgnomevfs2-0 libgnomevfs2-common libgtk2-gladexml-perl libgtk2-perl libgraphviz-dev libmono-system-data-linq4.0-cil libmono-system-numerics4.0-cil libmono-system-runtime-serialization-formatters-soap4.0-cil libmono-system-runtime4.0-cil libmono-system-web4.0-cil libmono-system-xml4.0-cil libmono-system4.0-cil libsqlite3-dev libtool libxenomai-dev libxml-libxml-perl libxml-libxml-simple-perl libxml-parser-perl libxml2-dev libxslt1-dev libzmq3-dev mono-mcs mono-reference-assemblies-2.0 mono-runtime nedit net-tools pgadmin3 postgresql postgresql-client postgresql-client-common postgresql-common python-antlr python-coverage python-gtk2-dev python-jinja2 python-lxml python-matplotlib python-pexpect python-pip python-ply python-psycopg2 python-pygraphviz python-pyside python3-pip qemu-system sqlite3 sudo tk8.5 tree vim-gtk wmctrl xenomai-system-tools xmldiff xpdf xterm xterm zip openjdk-8-jre libc6-dev-i386 python3-lxml