rSAFor access not get propagated to subdomains and require separate call for each subdomain

[ilipkind]

Hello,

We noticed if iframe needed access to number of subdomains for primary site example.com like a.example.com and b.example.com calling rSAFor just for example.com is not sufficient and we need to request separate SAA for rSAFor(a.example.com) and rSAFor(b.example.com). Luckily we can reuse the same user gesture for all rSAFor() requests but ideally we would like to call rSAFor() only for a parent domain in RWS instead of accomodate for each subdomain.

[johannhof]

@cfredric and I discussed this and think it's reasonable to make at least the iframe (rSA) grants from rSAFor have site scope to be consistent with normal rSA grants.