[Labs-l] labs bastion reminder

[Andrew Bogott]

As part of the pmtpa shutdown, I'm renaming the bastions (e.g. 
bastion.wmflabs.org) to point to the new bastion instances in eqiad.  
Here are the differences you will notice:

- If you connect from a bastion to an instance by hostname only, it will 
now default to eqiad.  For example

(previously):

$ ssh -A bastion.wmflabs.or
andrew at bastion:~$ ssh foo
andrew at foo:~$ echo hostname -d
pmtpa.wmflabs

(now):

$ ssh -A bastion.wmflabs.or
andrew at bastion1:~$ ssh foo
andrew at foo:~$ echo hostname -d
eqiad.wmflabs

- The eqiad bastions have different ssh fingerprints, so you'll be 
warned and prompted to accept the new host.  To verify that you're 
connecting to the proper host, visit 
https://wikitech.wikimedia.org/wiki/Help:SSH_Fingerprints

That should be it!  Let me know if you run into additional problems.

-Andrew