Re: running logical replication as the subscription owner

> Some concern was expressed -- not sure exactly where the email is
> exactly, and it might've been on pgsql-security -- that doing that
> categorically might break things that are currently working. The
> people who were concerned included Andres and I forget who else. My
> gut reaction was the same as yours, just do it always and don't worry
> about it. But if people think that users are likely to run afoul of
> the SECURITY_RESTRICTED_OPERATION restrictions in practice, then this
> is better, and the implementation complexity isn't high. We could even
> think of extending this kind of logic to other places where
> SECURITY_RESTRICTED_OPERATION is enforced, if desired.

I personally cannot think of a reasonable example that would be
broken, but I agree the code is simple enough. I do think that if
there is an actual reason to do this, we'd probably want it in other
places where SECURITY_RESTRICTED_OPERATION is enforced too.

I think there's some important tests missing related to this:
1. Ensuring that SECURITY_RESTRICTED_OPERATION things are enforced
when the user **does not** have SET ROLE permissions to the
subscription owner, e.g. don't allow SET ROLE from a trigger.
2. Ensuring that SECURITY_RESTRICTED_OPERATION things are not enforced
when the user **does** have SET ROLE permissions to the subscription
owner, e.g. allows SET ROLE from trigger.

Finally a small typo in the one of the comments:

> + * If we created a new GUC nest level, also role back any changes that were
s/role/roll/