feat: metricsV2 + oTel + prometheus sample and Grafana dashboard #6459

Job	Run time
sample_operators_tests (sample-operators/metrics-processing)	2m 22s
sample_operators_tests (sample-operators/webpage)	2m 38s
sample_operators_tests (sample-operators/tomcat-operator)	2m 36s
sample_operators_tests (sample-operators/mysql-schema)	2m 38s
sample_operators_tests (sample-operators/leader-election)	2m 37s
sample_operators_tests (sample-operators/metrics-processing)	6m 34s
sample_operators_tests (sample-operators/leader-election)	2m 37s
sample_operators_tests (sample-operators/tomcat-operator)	2m 36s
sample_operators_tests (sample-operators/mysql-schema)	2m 38s
sample_operators_tests (sample-operators/webpage)	2m 38s
sample_operators_tests (sample-operators/webpage)	3m 8s
sample_operators_tests (sample-operators/mysql-schema)	2m 35s
sample_operators_tests (sample-operators/tomcat-operator)	2m 51s
sample_operators_tests (sample-operators/leader-election)	3m 15s
sample_operators_tests (sample-operators/metrics-processing)	6m 34s
	48m 17s

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