[Backport 2.x] [Feature] Enable ppl visualization in Chatbot #812

Job	Run time
Run test group of app_analytics_test	22m 56s
Run test group of datasources_test	10m 32s
Run test group of event_analytics_test	23m 3s
Run test group of integrations_test	10m 58s
Run test group of metrics_analytics_test	11m 50s
Run test group of notebooks_test	17m 43s
Run test group of panels_test	18m 13s
Run test group of trace_analytics_test	27m 8s
	2h 22m 23s

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