Checkmk Werk 15605: mk_filestats: Improve Handling of non-UTF-8 file paths

ID: 15605 Title: mk_filestats: Improve Handling of non-UTF-8 file paths Component: Checks & agents Level: 1 Class: Bug fix Version: 2.3.0b1 Previously, the agent plugin <tt>mk_filestats.py</tt> would show an error such as C+: UnicodeDecodeError: 'utf8' codec can't decode byte 0xc4 in position 42: invalid continuation byte C-: if it encountered any file, whose file path cannot be encoded to UTF-8. With this werk, the plugin no longer crashes. Any non-UTF-8 sequence of bytes is replaced with U+FFFD. In particular, this affects the filters and grouping.