Trusted Domains are Duplicated

[Tw1sm]

If the same domain is trusted by 2 different domains, the current parsing will treat that trusted domain as 2 different domains, instead of 1 domain that is trusted by multiple others.

For example, if north.sevenkingdoms.local and essos.local BOTH trust sevenkingdoms.local, when we check the trust mesh we will unexpectedly see duplicate nodes for sevenkingdoms.local where the other 2 domains trust "different" nodes.

I think the trusted domains need to be set with the same temporary SID instead of unique temp SIDs to resolve this.