slapos.proxy: new requests library does not send empty parameters, so adapt behavior when dealing with optional parameters.

Needed for requests, that now NEEDS brackets for ipv6.

Include correct partition_reference.

[slapos_hypermedia] Base_getHateoasMaster extends ERP5Document_getHateoas + all URNs return resource, not script.

Also cleanup and have a beginning of good basis to build a real navigator.

It is now provided by slaptool.

So that it fits ERP5Document_getHateoas style.

A few tests can be taken out of this BT to be put in erp5_hal_json_style.

This reverts commit 33d2a927e75fb4e6f6fd444ce55a209d639e2b44.

Instead of just failing with no clue except that 0 is equal to 0...

 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

  It is required to update the cpu_percent after a while to have more
  accurate values.

slapproxy tests: catch correct exception when testing if started, always stop proxy even in case of error in setup.