discovery: document the `devel.discovery.randomize` option
Gratuitous improvement as I was passing by this config section to add more.
Differential Revision: https://phab.mercurial-scm.org/D9797
--- a/mercurial/configitems.py Tue Jan 12 09:11:15 2021 -0800
+++ b/mercurial/configitems.py Sat Jan 16 00:21:54 2021 +0100
@@ -700,6 +700,8 @@
b'debug.peer-request',
default=False,
)
+# If discovery.randomize is False, random sampling during discovery are
+# deterministic. It is meant for integration tests.
coreconfigitem(
b'devel',
b'discovery.randomize',