Merge branch...

Merge branch '28.623_Rel18_CR0240_Clarify_reporting_and_monitoring_period_usage_in_SupportedPerfMetricGroup_datatype_yaml' into 'Integration_Rel18_SA5_147_YAML'

28.623 rel18 cr0240 clarify reporting and monitoring period usage in supported perf metric group datatype yaml

See merge request !527