[skolo] Update skolo bash aliases to presume ssh.cfg.
[skolo] Update skolo bash aliases to presume ssh.cfg.

That is, presume //skolo/ansible/ssh.cfg has been
appended to ~/.ssh/config so that short names can
be used for jumphosts.

Also:
 - Add aliases for some switches.
 - Use different ports for each connection.

Change-Id: I1a6b8a4fde735f89e3321a1aa7c6f56fe1979d84
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/410321
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot