CLOUDSTACK-8749: KVM - cleanup linklocal interface based on names

This tries to avoid cleaning by a device name.

This closes #718

(cherry picked from commit 74f697a)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Author: yadvr

plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/BridgeVifDriver.java

@@ -287,7 +287,7 @@ private void deleteExitingLinkLocalRouteTable(String linkLocalBr) {
             for (String line : lines) {
                 String[] tokens = line.split(" ");
                 if (!tokens[2].equalsIgnoreCase(linkLocalBr)) {
-                    Script.runSimpleBashScript("ip route del " + NetUtils.getLinkLocalCIDR());
+                    Script.runSimpleBashScript("ip route del " + NetUtils.getLinkLocalCIDR() + " dev " + tokens[2]);
                 } else {
                     foundLinkLocalBr = true;
                 }