[LOGG-2154] Rsyslog `target=` detection is incomplete

Describe the bug keywords in rsyslog are case insensitive and the examples have upper case parameters

this triggers a false positive for remote logging when using uppercase Target= as it only checks for target=: https://github.com/CISOfy/lynis/blob/f1926dd4aed7e3885a99ffd05f4cd72d276a6607/include/tests_logging#L423

Version

• Distribution : custom
• Lynis version : 3.1.7

Expected behavior No false positive, and support for case-insensitive parameters for rsyslog

Output

Additional context