Traces - Add traces unique count based on cardinality aggregation (#2… #4660

Job	Run time
Run test group of app_analytics_test	27m 21s
Run test group of event_analytics_test	26m 15s
Run test group of integrations_test	23m 8s
Run test group of metrics_analytics_test	23m 49s
Run test group of notebooks_test	27m 33s
Run test group of panels_test	26m 15s
Run test group of trace_analytics_test	27m 41s
	3h 2m 2s

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