Disable Terrapin sensible ciphers and algorithms

Summary:
All the servers include this configuration or are updated to a new version
of OpenSSH.

Instead of selecting on which server include this mitigation, we include it
everywhere so legacy clients are also protected.

Ref T1935.

Reviewers: DorianWinty

Reviewed By: DorianWinty

Maniphest Tasks: T1935

Differential Revision: https://devcentral.nasqueron.org/D3265