Remove no_wait ovs flag from vmw_nsx 3rd party lib

The no_wait flag can trigger a race conditon with ip addr flush
if the public bridge is not yet up. Due to this race condition
the local route for the external subnet might not be added.

The patch also renames br-ex to $PUBLIC_BRIDGE in some places

Change-Id: I11335c99dba580e7ca26b0b15b0df8dead367fdc

Author: salv-orlando

lib/neutron_thirdparty/vmware_nsx

@@ -8,7 +8,7 @@
 # * enable_service vmware_nsx        --> to execute this third-party addition
 # * PUBLIC_BRIDGE                    --> bridge used for external connectivity, typically br-ex
 # * NSX_GATEWAY_NETWORK_INTERFACE    --> interface used to communicate with the NSX Gateway
-# * NSX_GATEWAY_NETWORK_CIDR         --> CIDR to configure br-ex, e.g. 172.24.4.211/24
+# * NSX_GATEWAY_NETWORK_CIDR         --> CIDR to configure $PUBLIC_BRIDGE, e.g. 172.24.4.211/24
 
 # Save trace setting
 NSX3_XTRACE=$(set +o | grep xtrace)
@@ -29,7 +29,7 @@ function configure_vmware_nsx {
 function init_vmware_nsx {
     if ! is_set NSX_GATEWAY_NETWORK_CIDR; then
         NSX_GATEWAY_NETWORK_CIDR=$PUBLIC_NETWORK_GATEWAY/${FLOATING_RANGE#*/}
-        echo "The IP address to set on br-ex was not specified. "
+        echo "The IP address to set on $PUBLIC_BRIDGE was not specified. "
         echo "Defaulting to "$NSX_GATEWAY_NETWORK_CIDR
     fi
     # Make sure the interface is up, but not configured
@@ -42,14 +42,15 @@ function init_vmware_nsx {
     # only with mac learning enabled, portsecurity and security profiles disabled
     # The public bridge might not exist for the NSX plugin if Q_USE_DEBUG_COMMAND is off
     # Try to create it anyway
-    sudo ovs-vsctl --no-wait -- --may-exist add-br $PUBLIC_BRIDGE
-    sudo ovs-vsctl -- --may-exist add-port $PUBLIC_BRIDGE $NSX_GATEWAY_NETWORK_INTERFACE
+    sudo ovs-vsctl --may-exist add-br $PUBLIC_BRIDGE
+    sudo ovs-vsctl --may-exist add-port $PUBLIC_BRIDGE $NSX_GATEWAY_NETWORK_INTERFACE
     nsx_gw_net_if_mac=$(ip link show $NSX_GATEWAY_NETWORK_INTERFACE | awk '/ether/ {print $2}')
     sudo ip link set address $nsx_gw_net_if_mac dev $PUBLIC_BRIDGE
     for address in $addresses; do
         sudo ip addr add dev $PUBLIC_BRIDGE $address
     done
     sudo ip addr add dev $PUBLIC_BRIDGE $NSX_GATEWAY_NETWORK_CIDR
+    sudo ip link set $PUBLIC_BRIDGE up
 }
 
 function install_vmware_nsx {
@@ -63,7 +64,7 @@ function start_vmware_nsx {
 function stop_vmware_nsx {
     if ! is_set NSX_GATEWAY_NETWORK_CIDR; then
         NSX_GATEWAY_NETWORK_CIDR=$PUBLIC_NETWORK_GATEWAY/${FLOATING_RANGE#*/}
-        echo "The IP address expected on br-ex was not specified. "
+        echo "The IP address expected on $PUBLIC_BRIDGE was not specified. "
         echo "Defaulting to "$NSX_GATEWAY_NETWORK_CIDR
     fi
     sudo ip addr del $NSX_GATEWAY_NETWORK_CIDR dev $PUBLIC_BRIDGE