Try to install openvswitch-testcontroller if needed

util/install.sh

@@ -326,8 +326,8 @@ function ovs {
         $install openvswitch-datapath-dkms
     fi
 
-    $install openvswitch-switch openvswitch-controller
-
+    $install openvswitch-switch
+    if $install openvswitch-controller; then
         # Switch can run on its own, but
         # Mininet should control the controller
         # This appears to only be an issue on Ubuntu/Debian
@@ -337,6 +337,13 @@ function ovs {
         if [ -e /etc/init.d/openvswitch-controller ]; then
             sudo update-rc.d openvswitch-controller disable
         fi
+    else
+        echo "Attempting to install openvswitch-testcontroller"
+        if ! $install openvswitch-testcontroller; then
+            echo "Failed - giving up"
+        fi
+    fi
+
 }
 
 function remove_ovs {