Fix unknown arguments from check-doc.py

Summary:
The -zmq* arguments are not catched by the regex because they are
using a totally different pattern to get the arguments. A false positive
set has been added to check-doc.py to handle these special cases.

The -nodebug entry is an alias for -debug=0. Starting with "-no" it
is interpreted as a boolean with "false" value for the key "debug".
Boolean arguments are actully strings "0" for "false" and "1" for
"true", hence -nodebug is equivalent to -debug=0

The -fuzzmessagestest is no longer used and can be removed from the
documentation.

Depends on D2303

Test Plan:

make
./contrib/devtools/check-doc.py

Check there is no unknown argument in the output (empty set)
Check that the count of args used = (count of args documented + count of
args that don't need documentation)

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Subscribers: teamcity, schancel

Differential Revision: https://reviews.bitcoinabc.org/D2304