directly return content from GET() and POST() - no need for self.response
use requests package for 'slapos cache lookup'
pep8
use dict literals, except..as syntax
pep8 whitespaces
whitespace
properly log OSError exceptions
use assertIsInstance()
removed unittest2 (we are on python 2.7 anyway)
whitespace, indentation, light cleanup
both slapos.xml and slapos.xml.zip must exists for an attempt to backup
removed redundant logging of the exception
handle exceptions without --debug
added maximal_delay to new cli
remove supervisor configuration at the end of loop