Add startSpinner back #934

Job	Run time
Smoke test - core, schema (16.x)	1m 23s
Test - cli (macos-latest, 16.x)	4m 3s
Smoke test - core, schema (18.x)	1m 23s
Lint	28s
Test - cli (macos-latest, 18.x)	3m 3s
Smoke test - cli (macos-latest, 16.x)	4m 17s
Test - cli (ubuntu-latest, 16.x)	56s
Smoke test - cli (macos-latest, 18.x)	4m 21s
Test - cli (ubuntu-latest, 18.x)	55s
Smoke test - cli (ubuntu-latest, 16.x)	1m 58s
Smoke test - cli (ubuntu-latest, 18.x)	1m 58s
Test - core, schema, legacy-scripting-runner (16.x)	1m 0s
Test - core, schema, legacy-scripting-runner (18.x)	1m 31s
	27m 16s

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