Missed a few 'ubuntu -> precise/trusty' changes

428ad273332a647b404a6c340c58880a72e0c898 added trusty builds, and
changed several 'ubuntu' names to either 'precise' or 'trusty';
there were several things connected with the local minion repo that
did not get fixed (the bootstrap script, the salt states for
making the repos, etc.)  This commit is the result of a scan for
'ubuntu' in any case and a replacement/fix for the missing bits.

Signed-off-by: Dan Mick <dan.mick@inktank.com>
debian: Update build-depends to be able to use pbuilder

* Added debhelper and lsb-release to Build-Depends
* Bump Standards-Version to 3.9.3
* Added Vcs-Browser field
* Added readme to calamari-server docs
* Switch to architecture any (depends to python-dev)
* Added debhelper misc:Depends and python:Depends