What's Changed

Concerns #26

Fix connecting to many servers. Two issues were identified:

• Identity keys are tried for all servers resulting in too many auth failure
• ParsePrivateKeyWithPassphrase will be executed multiple times if multiple servers refer to the same identity file

Technical Description

Currently, public keys defined for one server are also tried for other servers. This leads to:

ssh: handshake failed: ssh: disconnect, reason 2: Too many authentication failures

when many servers are defined.