HDDS-7036. Enable RocksDB stats in monitoring sample config (#3619)

diff --git a/hadoop-ozone/dist/src/main/compose/ozone/monitoring.conf b/hadoop-ozone/dist/src/main/compose/ozone/monitoring.conf
index 156d539..7fcf1cc 100644
--- a/hadoop-ozone/dist/src/main/compose/ozone/monitoring.conf
+++ b/hadoop-ozone/dist/src/main/compose/ozone/monitoring.conf
@@ -16,6 +16,7 @@
 
 OZONE-SITE.XML_hdds.prometheus.endpoint.enabled=true
 OZONE-SITE.XML_hdds.tracing.enabled=true
+OZONE-SITE.XML_ozone.metastore.rocksdb.statistics=ALL
 HDFS-SITE.XML_rpc.metrics.quantile.enable=true
 HDFS-SITE.XML_rpc.metrics.percentiles.intervals=60,300
 JAEGER_SAMPLER_PARAM=1