refactor topologytests (#7238) #12415

Job	Run time
lint	1m 44s
build	1m 15s
python-format	7s
addlicense	10s
python-lint	5s
test (macos)	4m 2s
test-default-collection	4m 7s
test-race	5m 55s
test (windows)	7m 8s
test (ubuntu)	4m 34s
test-sgcollect (macos-latest)	1m 5s
test-stats-definition-exporter (macos-latest)	47s
test-sgcollect (windows-latest)	3m 41s
test-stats-definition-exporter (windows-latest)	2m 16s
test-sgcollect (ubuntu-latest)	24s
test-stats-definition-exporter (ubuntu-latest)	1m 8s
	38m 28s

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