[TEST] MLT Rest test needs a mapping since we randomized number of nodes/shards
[TEST] MLT Rest test needs a mapping since we randomized number of nodes/shards

fubuki/elasticsearch,vorce/es-metrics,fubuki/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,vorce/es-metrics,aparo/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,vorce/es-metrics,aparo/elasticsearch,vorce/es-metrics,aparo/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,vorce/es-metrics,fubuki/elasticsearch