Replace static-routes with udev rules

When host is restarted, static-routes won't be able add route rules
because HIMN isn't brought up. Thus we need to use udev to add
those route rules back. As tested there is time gap between udev is
triggered and HIMN is ready, a 5-sec sleep is added just in case.

Change-Id: Ifa3260107265f400bde2a33640d4da2fc9f32ddf
(cherry picked from commit a28e0bbdc3)

deployment_scripts/compute_post_deployment.py

@@ -271,6 +271,8 @@ def route_to_compute(endpoints, himn_xs, himn_local, username):
         mask
     ), out)
 
+    ssh(himn_xs, username,
+        'printf "#!/bin/bash\nsleep 5\n" > /etc/udev/scripts/reroute.sh')
     endpoint_names = ['storage', 'mgmt']
     for endpoint_name in endpoint_names:
         endpoint = endpoints.get(endpoint_name)
@@ -281,11 +283,19 @@ def route_to_compute(endpoints, himn_xs, himn_local, username):
                 params = ['route', 'add', '-net', net, 'netmask',
                           mask, 'gw', himn_local]
                 ssh(himn_xs, username, *params)
-                sh = 'echo \'%s\' >> /etc/sysconfig/static-routes' \
-                    % ' '.join(params)
-                ssh(himn_xs, username, sh)
+                cmd = (
+                    "printf 'if !(/sbin/route -n | /bin/grep -q {net}); then\n"
+                    "/sbin/route add -net {net} netmask {mask} gw {himn_local};\n"
+                    "fi\n' >> /etc/udev/scripts/reroute.sh"
+                )
+                cmd = cmd.format(net=net, mask=mask, himn_local=himn_local)
+                ssh(himn_xs, username, cmd)
         else:
             logging.info('%s network ip is missing' % endpoint_name)
+    ssh(himn_xs, username, 'chmod +x /etc/udev/scripts/reroute.sh')
+    ssh(himn_xs, username, ('echo \'SUBSYSTEM=="net" ACTION=="add" '
+                            'KERNEL=="xenapi" RUN+="/etc/udev/scripts/reroute.sh"\' '
+                            '> /etc/udev/rules.d/90-reroute.rules'))
 
 
 def install_suppack(himn, username):

metadata.yaml

@@ -3,7 +3,7 @@ name: fuel-plugin-xenserver
 # Human-readable name for your plugin
 title: XenServer Plugin
 # Plugin version
-version: '3.1.0'
+version: '3.1.1'
 # Description
 description: Enable Mirantis OpenStack to integrate with Xenserver
 # Required fuel version