Fix registration of metrictank.stats.$environment.$instance.input.kafka-mdm.partition.*
Fix registration of metrictank.stats.$environment.$instance.input.kafka-mdm.partition.*

raintank/raintank-metric,raintank/metrictank,raintank/metrictank,replay/metrictank,replay/metrictank,replay/metrictank,raintank/metrictank,raintank/raintank-metric,raintank/raintank-metric,replay/metrictank,raintank/metrictank