[slapos.collect] fix collection of cpu_times for the processes.

  It is required to update the cpu_percent after a while to have more
  accurate values.
[slapos.collect] Collect temperature and report consumption

 In relation to data collection this commit introduces:

  - data collector for temperature (parsing sensors)
  - Heating testing for determinate the Zero Emission Ratio of the computer.

 In relation to reports this commits introduces:

  - Consumption report for computer usage (CPU Load, Zero Emission Ratio, Memory)
  - Consumption report for partitions (CPU Load and Memory)
  - All consumption reports uses TioSafe XML Format