Yet another gerrit update (2.14.1)

[Patrick Georgi]

Hi everybody,

I just updated our gerrit instance, which should fix a number of
performance related regressions.

Since there were requests for supporting ecdsa and ed25519 keys in gerrit's
ssh interface, I also want to point out that 2.14 brought support for them.
I didn't mention it because it was known to be broken, but 2.14.1 is
supposed to fix it, so feel free to use it now.

Patrick