Use argparse in rpc_tests.py
Summary:
Backport the followign commit from bitcoin core:
commit 91bfffff5d1de034661e7fd6b319447b47ae6e33
Author: John Newbery <john@johnnewbery.com>
Date: Tue Jan 31 10:15:40 2017 -0800
Use argparse in rpc_tests.py
This commit replaces the roll-your-own argument parsing in rpc_tests.py
with Python's standard library argparse.Depends on D817
Test Plan: ./configure && make && ./qa/pull-tester/rpc-tests.py
Reviewers: deadalnix, #bitcoin_abc, Yura
Reviewed By: deadalnix, #bitcoin_abc
Differential Revision: https://reviews.bitcoinabc.org/D818