Change Details

``` - Add functional test coverage for rpc addpeeraddress - Simplify addpeeraddress and improve code constness ``` Backport of core#22043.

``` - Add functional test coverage for rpc addpeeraddress - Simplify addpeeraddress and improve code constness ``` Backport of [[https://github.com/bitcoin/bitcoin/pull/22043 | core#22043]].

``` - Add functional test coverage for rpc addpeeraddress - Simplify addpeeraddress and improve code constness ``` Backport of [[https://github.com/bitcoin/bitcoin/pull/22043 | core#22043]].