Log Message:
py-psutil: updated to 5.6.2

5.6.2

**Enhancements**
- 604_: [UNIX, Windows] add new psutil.getloadavg() returning system load
- 1404_: [Linux] cpu_count(logical=False) uses a second method (read from
  /sys/devices/system/cpu/cpu[0-9]/topology/core_id) in order to determine
  the number of physical CPUs in case /proc/cpuinfo does not provide this info.
- 1458_: provide coloured test output. Also show failures on KeyboardInterrupt.
- 1464_: various docfixes (always point to python3 doc, fix links, etc.).
- 1473_: [Windows] process IO priority (ionice()) values are now exposed as 4
  new constants: IOPRIO_VERYLOW, IOPRIO_LOW, IOPRIO_NORMAL, IOPRIO_HIGH.
  Also it was not possible to set high I/O priority (not it is).
- 1478_: add make command to re-run tests failed on last run.
  average calculation.

**Bug fixes**
- 1223_: [Windows] boot_time() may return value on Windows XP.
- 1456_: [Linux] cpu_freq() returns None instead of 0.0 when min/max not
  available
- 1462_: [Linux] (tests) make  tests invariant to LANG setting
- 1463_: cpu_distribution.py script was broken.
- 1470_: [Linux] disk_partitions(): fix corner case when /etc/mtab doesn't
  exist.
- 1471_: [SunOS] Process name() and cmdline() can return SystemError.
- 1472_: [Linux] cpu_freq() does not return all CPUs on Rasbperry pi 3.
- 1474_: fix formatting of psutil.tests() which mimicks 'ps aux' output.
- 1475_: [Windows] OSError.winerror attribute wasn't properly checked resuling
  in WindowsError being raised instead of AccessDenied.
- 1477_: [Windows] wrong or absent error handling for private NTSTATUS Windows
  APIs. Different process methods were affected by this.
- 1480_: [Windows] psutil.cpu_count(logical=False) could cause a crash due to
  fixed read violation.
- 1486_: [AIX, SunOS] AttributeError when interacting with Process methods
  involved into oneshot() context.
- 1491_: [SunOS] net_if_addrs(): free() ifap struct on error.
- 1493_: [Linux] cpu_freq(): handle the case where
  /sys/devices/system/cpu/cpufreq/ exists but is empty.