Fix type for evictions by changing to counter
Fix type for evictions by changing to counter

rayhou/elasticsearch_exporter,mattkanwisher/elasticsearch_exporter,jrummler/elasticsearch_exporter,ewr/elasticsearch_exporter,Kuckkuck/elasticsearch_exporter,yackushevas/elasticsearch_exporter,justwatchcom/elasticsearch_exporter,William-Yeh/es_cluster_exporter