tests: add a rudimentary fuzzer for server_process_syslog_message (#9979)
    
    (cherry picked from commit a70f343cacf03ac51cdefb0d2e7651b04fd2e23a)
    
    Resolves: #1696224
    
    patch_name: 0140-tests-add-a-rudimentary-fuzzer-for-server_process_sy.patch
    present_in_specfile: true
    location_in_specfile: 140
    squash_commits: true