replace dashboards with the getting started dashboards #2793

Job	Run time
Run test group of app_analytics_test	15m 34s
Run test group of datasources_test	13m 23s
Run test group of event_analytics_test	24m 15s
Run test group of integrations_test	12m 32s
Run test group of metrics_analytics_test	15m 46s
Run test group of notebooks_test	15m 30s
Run test group of panels_test	16m 38s
Run test group of trace_analytics_test	29m 42s
	2h 23m 20s

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