Accept multiple realms for Local Peer

[SummaNetworks]

The Local peer shall allow defining multiple realms to enable hosting multiple-realms. Currently, only 1 realm is allowed, so, we have to use a DRA to translate everything into a unique realm.

[phuongdinh1411]

hi @SummaNetworks , why do you need this, i think it is better to run seperate peers for multi Realms. thanks.

[SummaNetworks]

Hi!! currently we are able to manage more than one operator using our service, each operator needs a unique realm, but now it is impossible to use it in a real environment due to stack restriction, stack only can manage one realm for the local peer. Now we have to install two machines, with two stacks to process two different realms, but the idea is to allow more than one operator in the same machine using the same stack/service/mobicents