[gnoack]

Bash aliases for specific ssh hosts are seldomly needed, you can just as well configure hostname aliases in your .ssh/config file

[giantrobot]

Helpfully modern ssh, at least 7.x IIRC, can handle Include statements in the main config. You need to put includes before any host configs you have in the main config file lest it think the include is part of a host's configuration. But this makes managing cloud host configs for instance much easier.