Add missing ManagementIpSubnet

Change 15bb67261a added the management
network, but the ManagementIpSubnet parameter was missed being added
net-config-static-bridge.yaml. This makes the template not work by
default since Heat will error when the parameter is passed in as a
property.  This adds the parameter which fixes the template.

Change-Id: Ie745103e596c9fe2d5562acfff157157be0ff0e2

net-config-static-bridge.yaml

@@ -29,6 +29,10 @@ parameters:
     default: ''
     description: IP address/subnet on the tenant network
     type: string
+  ManagementIpSubnet:
+    default: ''
+    description: IP address/subnet on the management network
+    type: string
   ControlPlaneSubnetCidr: # Override this via parameter_defaults
     default: '24'
     description: The subnet CIDR of the control plane network.