qa: Rename cli.args to cli.options

Summary:

That is the name in bitcoin-cli -help

Partial backport of core PR12089 (commit ffffb10)
https://github.com/bitcoin/bitcoin/pull/12089/commits/ffffb10a9f12b43d4716048ebfd7203bd79e59f3

Test Plan:

./test/functional/test_runner.py wallet_multiwallet

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D3458