[errorprone] ssh: suppress warning for arrays in records

Errorpone considers an error to have arrays (mutable) inside records
(immutable) [1].

Suppress the warnings in these records, as they are overriding equals
and hash to do the right thing.

[1] https://errorprone.info/bugpattern/ArrayRecordComponent

Change-Id: I01c724516b1b14d512d366a35708436463fccffc