PR11773 backport https://github.com/bitcoin/bitcoin/pull/11773/files
265d7c4 [tests] Improve assert message when wait_until() fails (John Newbery)
ebf053a [tests] Change feature_block.py to use BitcoinTestFramework (John Newbery)
fc02c12 [tests] Add logging to feature_block.py (John Newbery)
3898c4f [tests] Tidy up feature_block.py (John Newbery)
5cd01d2 [tests] Fix flake8 warnings in feature_block.py (John Newbery)
Pull request description:
Next step in #10603. - first three commits tidy up feature_block.py - fourth commit removes usage of ComparisonTestFramework Longer term, it would be better to separate net_processing testing from validation testing, but I think this is still a useful PR, since it moves us away from the comparison test framework.