Enabling Buildbot 'responsible user' emails.

[Amar Takhar]

Currently emails sent out directly are limited to Joel, Chris and myself.  This 
was setup during a testing phase.

Typically what will happen is if a Builder within Buildbot changes from:

  Working -> Broken
  Broken -> Working

It will send an email to the 'responsible users'.  You can see a list for this 
Build here:

  https://buildbot.rtems.org/#/builders/19/builds/47

Click on the 'Responsible Users' tab.

What does everyone think about removing this restriction and simply sending out 
emails when a build breaks.  This way the developer who has changed the status 
of a build is notified immediately.

This does mean, once all 250 emails are enabled if the build breaks you could 
get swamped.

Buildbot does support both Pushover and Pushjet as well.

We also have an IRC channel on Freenode that is #rtems-build where announcements 
happen.

Nobody likes getting swamped with emails however we could try it out and see how 
it goes.  I do plan on adding the rest of the BSPs at some point when I have 
free time.


Amar.