Update to the latest stable release of the bootstrap script v2015.05.04
Update to the latest stable release of the bootstrap script v2015.05.04

* Fix the configuration path for FreeBSD. #567/#552. Thanks Ronald van Zantvoort(The-Loeki).
* Fix non grouping support in POSIX sed. Thanks Ronald van Zantvoort(The-Loeki).
* Add Debian 8 support. Thanks Matt Black(mafrosis)
* Improve Debian version parsing. Thanks Mark Lee(malept)
* Make sure we update packages list one Chris Lea's PPA repository is added.
* Hard code the Debian Squeeze backports to the DE mirror since the main repository is down. Thanks @panticz. saltstack/salt-bootstrap#589.
* Only install git if not already installed. saltstack/salt-bootstrap#560
* Fix openSUSE 13.2 where we need to pass --replaceflags. Thanks Roman Inflianskas(rominf). saltstack/salt-bootstrap#504.
* Make sure that a recent enough requests package is installed in Debian/Ubuntu.
* Install tornado on git installs for the develop branch if necessary. saltstack/salt-bootstrap#580
* Add support for Ubuntu 15.04

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt