fix: wait for pods to be ready before port-forwarding in MetricsHandl… #6545

Job	Run time
sample_operators_tests (sample-operators/metrics-processing)	17m 52s
sample_operators_tests (sample-operators/tomcat-operator)	2m 57s
sample_operators_tests (sample-operators/leader-election)	3m 21s
sample_operators_tests (sample-operators/mysql-schema)	2m 46s
sample_operators_tests (sample-operators/webpage)	3m 8s
	30m 4s

Provide feedback