Documented Github secret variables #1313

Job	Run time
set_matrix	1s
test (ubuntu-latest, 3.10, minimum)	13m 1s
test (ubuntu-latest, 3.10, latest)	10m 19s
test (ubuntu-latest, 3.10, ansible)	7m 12s
test (ubuntu-latest, 3.11, minimum)	9m 8s
test (ubuntu-latest, 3.11, latest)	12m 37s
test (ubuntu-latest, 3.11, ansible)	6m 26s
test (ubuntu-20.04, 2.7, minimum, python:2.7.18-buster)	3m 21s
test (ubuntu-20.04, 2.7, latest, python:2.7.18-buster)	4m 20s
test (ubuntu-20.04, 3.5, minimum)	5m 0s
test (ubuntu-20.04, 3.5, latest)	7m 13s
test (ubuntu-20.04, 3.6, minimum)	6m 32s
test (ubuntu-latest, 3.7, minimum)	6m 18s
test (ubuntu-latest, 3.8, minimum)	6m 9s
test (ubuntu-latest, 3.9, minimum)	9m 58s
test (ubuntu-latest, 3.9, latest)	9m 18s
test (ubuntu-latest, 3.9, ansible)	6m 35s
test (macos-latest, 3.10, minimum)	21m 37s
test (macos-latest, 3.10, latest)	16m 33s
test_finish	18s
	2h 41m 56s

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