Feature request: configurable defaults for MASTER_SSL_* settings for CHANGE MASTER

When having multiple replication channels (or when changing what primary to replicate from often) and using two-way TLS the client certificate and CA files used as MASTER_SSL_* parameters in CHANGE MASTER TO will usually be the same and not change between connections to different primaries.

So it may make sense to be able to configure a client certificate to be used for all replication channels in a central place instead of having to add MASTER_SSL_CA, MASTER_SSL_CERT and MASTER_SSL_KEY (and maybe MASTER_SSL_VERIFY_SERVER_CERT, too) again and again each time a CHANGE MASTER TO is done.

E.g.:

replication_ssl_ca=...

replication_ssl_cert=...

replication_ssl_key=...

and maybe also an explicit MASTER_SSL_USE_DEFAULTS option to CHANGE MASTER to only use such default settings on demand.