Allow AES-GCM ciphers with RSA certificates
At the moment, three TLS ciphersuites are supported by the app. However, as RSA certificates are used by default, only one is actually usable by server sockets. The other two are restricted to ECDSA certificates. This patch adds the same two AES-GCM ciphers for use with RSA certificates.
Use case: Allow peers with no support for CBC ciphers to connect (e.g. Rustls)