
This patch allow for enabling or disabling multicast on a Tier-1 GW router. This is simply done by setting a boolean flag in the router's multicast configuration, which is however a sub-attribute of the Tier-1 GW object accessed via its own API endpoint. For the above reason, this patch introduces a definition object for the Tier-1 Multicast settings. Change-Id: I8308442ecd9b4d14f4ceb0ea55c4dcd4ee240e17