btrfs: print the kernel and OS versions

Author: ader1990

build_library/disk_util

@@ -773,6 +773,11 @@ def SudoOutputToConsole(cmd):
 
 def LogBtrfsUsage(mount_point, section=None):
   print('Btrfs usage for mount point `%s` %s' % (mount_point, section))
+  try:
+      SudoOutputToConsole(['cat', '/etc/os-release'])
+      SudoOutputToConsole(['uname', '-a'])
+  except Exception as ex1:
+      print(ex1)
   try:
       SudoOutputToConsole(['btrfs', 'fi', 'usage', mount_point])
   except Exception as ex: