Tests fail to run with python 3.8

Python's platform module removed its linux_distribution() method... https://trac.torproject.org/projects/tor/ticket/30847 https://docs.python.org/3/library/platform.html#platform.linux_distribution https://stackoverflow.com/questions/49554443/platform-linux-distribution-deprecated-what-are-the-alternatives This method was only used for display purposes to indicate the OS where the tests were ran. No big whoop if we simply omit the information.

Tests fail to run with python 3.8
af52d8b1 · Damian Johnson · 3efc9c5c · af52d8b1
Commit af52d8b1 authored Jun 12, 2019 by Damian Johnson
--- a/test/task.py
+++ b/test/task.py
@@ -120,7 +120,10 @@ def _check_platform_version():
    extra = platform.release()
  elif platform.system() == 'Darwin':
    extra = platform.release()
-  elif platform.system() == 'Linux':
+  elif platform.system() == 'Linux' and hasattr(platform, 'linux_distribution'):
+    # TODO: platform.linux_distribution() was removed in python 3.8
+    # https://trac.torproject.org/projects/tor/ticket/30847
+
    extra = ' '.join(platform.linux_distribution()[:2])
  else:
    extra = None