Make log4j dependency a test only dependency
Make log4j dependency a test only dependency

Original commit: elastic/x-pack-elasticsearch@cc8936ad8ff061228b6292bb1348a60cadab9723

scorpionvicky/elasticsearch,robin13/elasticsearch,coding0011/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,robin13/elasticsearch,gingerwizard/elasticsearch,scorpionvicky/elasticsearch,gfyoung/elasticsearch,scorpionvicky/elasticsearch,strapdata/elassandra,scorpionvicky/elasticsearch,gingerwizard/elasticsearch,vroyer/elassandra,strapdata/elassandra,gingerwizard/elasticsearch,vroyer/elassandra,uschindler/elasticsearch,gingerwizard/elasticsearch,vroyer/elassandra,gfyoung/elasticsearch,uschindler/elasticsearch,GlenRSmith/elasticsearch,GlenRSmith/elasticsearch,gfyoung/elasticsearch,nknize/elasticsearch,HonzaKral/elasticsearch,HonzaKral/elasticsearch,gfyoung/elasticsearch,gingerwizard/elasticsearch,uschindler/elasticsearch,gingerwizard/elasticsearch,strapdata/elassandra,gingerwizard/elasticsearch,strapdata/elassandra,GlenRSmith/elasticsearch,strapdata/elassandra,robin13/elasticsearch,robin13/elasticsearch,coding0011/elasticsearch,HonzaKral/elasticsearch,nknize/elasticsearch,scorpionvicky/elasticsearch,robin13/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,coding0011/elasticsearch,nknize/elasticsearch,gfyoung/elasticsearch,coding0011/elasticsearch,coding0011/elasticsearch,uschindler/elasticsearch,uschindler/elasticsearch,HonzaKral/elasticsearch