improve: config providers for yaml and properties logs only warning on missing file #6663

Job	Run time
sample_operators_tests (sample-operators/tomcat-operator)	2m 49s
sample_operators_tests (sample-operators/metrics-processing)	7m 16s
sample_operators_tests (sample-operators/webpage)	3m 9s
sample_operators_tests (sample-operators/mysql-schema)	2m 33s
sample_operators_tests (sample-operators/leader-election)	3m 33s
	19m 20s

Provide feedback