Fix bulk operations OIS test
Fix bulk operations OIS test

abibell/elasticsearch-net,tkirill/elasticsearch-net,LeoYao/elasticsearch-net,LeoYao/elasticsearch-net,ststeiger/elasticsearch-net,robertlyson/elasticsearch-net,robrich/elasticsearch-net,junlapong/elasticsearch-net,ststeiger/elasticsearch-net,joehmchan/elasticsearch-net,junlapong/elasticsearch-net,gayancc/elasticsearch-net,SeanKilleen/elasticsearch-net,starckgates/elasticsearch-net,starckgates/elasticsearch-net,robrich/elasticsearch-net,wawrzyn/elasticsearch-net,starckgates/elasticsearch-net,DavidSSL/elasticsearch-net,faisal00813/elasticsearch-net,SeanKilleen/elasticsearch-net,robertlyson/elasticsearch-net,mac2000/elasticsearch-net,wawrzyn/elasticsearch-net,robrich/elasticsearch-net,faisal00813/elasticsearch-net,joehmchan/elasticsearch-net,DavidSSL/elasticsearch-net,SeanKilleen/elasticsearch-net,abibell/elasticsearch-net,tkirill/elasticsearch-net,ststeiger/elasticsearch-net,DavidSSL/elasticsearch-net,abibell/elasticsearch-net,mac2000/elasticsearch-net,LeoYao/elasticsearch-net,robertlyson/elasticsearch-net,joehmchan/elasticsearch-net,tkirill/elasticsearch-net,junlapong/elasticsearch-net,gayancc/elasticsearch-net,mac2000/elasticsearch-net,faisal00813/elasticsearch-net,gayancc/elasticsearch-net,wawrzyn/elasticsearch-net