Monitor: follow changes for promises definition in slapos.core and slapos.toolbox

Remove useless files from monitor configuration which are not used anymore

Move logrotate configuration and some monitor wrapper scripts to buildout

Use new promises from slapos.toolbox

Remove fluentd from software monitor

Update monitor Readme to follow ne promises design in slapos.core: now slapgrid will run all promises and monitor will collect results from Json files.