testing bad-txn-sigops using p2sh
Summary: P2SH tx test added. Max sigops count per txn is 20k.
Test Plan: ../qa/rpc-tests/abc-p2p-fullblocktest.py
Reviewers: O1 Bitcoin ABC, #bitcoin_abc, deadalnix
Reviewed By: O1 Bitcoin ABC, #bitcoin_abc, deadalnix
Subscribers: deadalnix
Differential Revision: https://reviews.bitcoinabc.org/D209