tests: fix test-patchbomb-tls.t instability
The flakiness on chg is caused by a client that exit faster than the server
output log.
So actively wait for the server to issue the expected output (with a small
timeout)
[build-system]
requires = ["setuptools", "wheel"]
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true