removed forked base test classes and let tests depend on provided base classes.
removed forked base test classes and let tests depend on provided base classes.

During tests we run now only with jar hell enabled, security manager remains to be disabled.

Original commit: elastic/x-pack-elasticsearch@06aebc5ec572633931f87d128d806036bdbafe73

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