Merge #13192: [tests] Fixed intermittent failure in p2p_sendheaders.py.
Summary:
PR13192 backport https://github.com/bitcoin/bitcoin/pull/13192/files
12d1b77f7e [tests] Fixed intermittent failure in p2p_sendheaders.py. (lmanners)
Pull request description:
Added handling for the case where headers are announced over more than one message. refs #12453
Depends on D3086
Test Plan: test_runner.py
Reviewers: jasonbcox, Fabien, #bitcoin_abc, deadalnix
Reviewed By: #bitcoin_abc, deadalnix
Maniphest Tasks: T453
Differential Revision: https://reviews.bitcoinabc.org/D3087