MINOR: sample: Add be2dec converter

Add be2dec converter which allows to build JA3 compatible TLS
fingerprints by converting big-endian binary data into string
separated unsigned integers eg.

http-request set-header X-SSL-JA3 %[ssl_fc_protocol_hello_id],\
    %[ssl_fc_cipherlist_bin(1),be2dec(-,2)],\
    %[ssl_fc_extlist_bin(1),be2dec(-,2)],\
    %[ssl_fc_eclist_bin(1),be2dec(-,2)],\
    %[ssl_fc_ecformats_bin,be2dec(-,1)]
3 files changed