Add bridge_mappings to extras/80-opendaylight.sh to support vlan isolation.

OpenDaylight integration with Openstack requires some extra configuration
information to be set in the ovsdb via the other_config value. Currently
only the local ip address is set. bridge_mappings needs to be added to support
vlan isolation.

This requires changing the form of the existing ovs-vsctl command to set
the other_config value. The current command does a replace so the last
command to run overwrites any other values. The command is changed to
append values instead.

Change-Id: Ia001ecf27c8f5ace05af014ecce0b13f6d490ac1
diff --git a/extras.d/80-opendaylight.sh b/extras.d/80-opendaylight.sh
index c3c85fc..bf99866 100644
--- a/extras.d/80-opendaylight.sh
+++ b/extras.d/80-opendaylight.sh
@@ -47,7 +47,11 @@
         ODL_MGR_PORT=${ODL_MGR_PORT:-6640}
         read ovstbl <<< $(sudo ovs-vsctl get Open_vSwitch . _uuid)
         sudo ovs-vsctl set-manager tcp:$ODL_MGR_IP:$ODL_MGR_PORT
-        sudo ovs-vsctl set Open_vSwitch $ovstbl other_config={"local_ip"="$ODL_LOCAL_IP"}
+        if [[ -n "$OVS_BRIDGE_MAPPINGS" ]] && [[ "$ENABLE_TENANT_VLANS" == "True" ]]; then
+            sudo ovs-vsctl set Open_vSwitch $ovstbl \
+                other_config:bridge_mappings=$OVS_BRIDGE_MAPPINGS
+        fi
+        sudo ovs-vsctl set Open_vSwitch $ovstbl other_config:local_ip=$ODL_LOCAL_IP
     elif [[ "$1" == "stack" && "$2" == "post-extra" ]]; then
         # no-op
         :