Remove qubes-dom0-network-via-netvm tool (#820)

If someone really needs it for debuging he/she should be able to either
do it manually (xl network-attach...) or at worst case retrieve this
tool from git history.

doc/qubes-tools/qubes-dom0-network-via-netvm.rst

@@ -1,24 +0,0 @@
-============================
-qubes-dom0-network-via-netvm
-============================
-
-NAME
-====
-qubes-dom0-network-via-netvm - enables networking in dom0
-
-:Date:   2012-04-13
-
-SYNOPSIS
-========
-| qubes-dom0-network-via-netvm [up|down]
-
-OPTIONS
-=======
---help
-    Show this help message
-
-AUTHORS
-=======
-| Joanna Rutkowska <joanna at invisiblethingslab dot com>
-| Rafal Wojtczuk <rafal at invisiblethingslab dot com>
-| Marek Marczykowski <marmarek at invisiblethingslab dot com>

qvm-tools/qubes-dom0-network-via-netvm

@@ -1,103 +0,0 @@
-#!/usr/bin/python2
-#
-# The Qubes OS Project, http://www.qubes-os.org
-#
-# Copyright (C) 2010  Rafal Wojtczuk <rafal@invisiblethingslab.com>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-#
-
-from qubes.qubes import QubesVmCollection
-import os.path
-import os
-import sys
-
-qvm_collection = None
-
-def get_netvm():
-    global qvm_collection
-    qvm_collection = QubesVmCollection()
-    qvm_collection.lock_db_for_reading()
-    qvm_collection.load()
-    qvm_collection.unlock_db()
-    netvm = qvm_collection.get_default_netvm()
-    while netvm.netvm is not None:
-        netvm = netvm.netvm
-    if netvm is None or netvm.name == 'dom0':
-        print >> sys.stderr, 'There seems to be no dedicated default netvm, aborting.'
-        sys.exit(1)
-    return netvm
-
-def vif_eth0_exists():
-    if not os.path.islink('/sys/class/net/eth0'):
-        return False
-    if not os.path.isdir('/sys/devices/vif-0/net/eth0'):
-        print >> sys.stderr, 'There is a dedicated netvm, but device eth0 is present'
-        print >> sys.stderr, 'and it is not a Xen interface. Refusing to continue.'
-        sys.exit(1)
-    return True
-
-def bringup_eth0(netvm):
-    resolv_conf = open('/etc/resolv.conf', "w")
-    resolv_conf.write('nameserver ' + netvm.gateway + '\n')
-    resolv_conf.write('nameserver ' + netvm.secondary_dns + '\n')
-    resolv_conf.close()
-    return os.system('ip link set eth0 up && ip addr add 10.137.0.2/32 dev eth0 && ' +
-            'ip route add 10.137.0.1 dev eth0 && ip route add via 10.137.0.1') == 0
-
-def netup():
-    netvm = get_netvm()
-    if os.path.isfile('/var/lock/subsys/NetworkManager'):
-        os.system('/etc/init.d/NetworkManager stop')
-    if not vif_eth0_exists():
-        cmd = 'modprobe xen-netfront'
-        if os.system(cmd) != 0:
-            print >> sys.stderr, 'Error creating network device'
-            sys.exit(1)
-        qvm_collection[0].attach_network(verbose=True, netvm=netvm, wait=True)
-    if not bringup_eth0(netvm):
-        sys.exit(1)
-
-def netdown():
-    netvm = get_netvm()
-    if not vif_eth0_exists():
-        print >> sys.stderr, 'There is no eth0 that is a Xen vif device, aborting.'
-        sys.exit(1)
-    resolv_conf = open('/etc/resolv.conf', "w")
-    resolv_conf.close()
-    os.system('ip link set eth0 down')
-    os.system('xl network-detach 0 0')
-
-def usage():
-    print >> sys.stderr, 'Usage: {0} [up|down]'.format(sys.argv[0])
-    sys.exit(1)
-
-def main():
-    if len(sys.argv) != 2:
-        usage()
-    if os.getuid() != 0:
-        print >> sys.stderr, 'This script must be run as root'
-        sys.exit(1)
-    if sys.argv[1] == 'up':
-        netup()
-        sys.exit(0)
-    if sys.argv[1] == 'down':
-        netdown()
-        sys.exit(0)
-    usage()
-
-main()
-