Set up PRSERV with the yocto-autobuilder as an option
Shifting to 2.1 Some notes. This will have to be a step that checks if USE_PRSERV is set in autobuilder.conf, starts prserv if it isn't running, adds the bits to auto.conf, passes that to triggered builds to add to autoconf but only on master builds (or USE_PRSERV_BRANCH). This is disruptive enough, that I'm going to move this to 2.1
http://git.yoctoproject.org/cgit/cgit.cgi/yocto-autobuilder/commit/?id=143315dc0acd53eeceff87faa4df6b3149e1e3c3
Verified.