store/driver: Use BatchGet method supported in client-go. (#29860)
store/driver: Use BatchGet method supported in client-go. (#29860)

 
pingcap/tidb,pingcap/tidb,c4pt0r/tidb,pingcap/tidb,kyle-wang/tidb,pingcap/tidb,ngaut/tidb,kyle-wang/tidb,ngaut/tidb,kyle-wang/tidb,pingcap/tidb,kyle-wang/tidb,pingcap/tidb,ngaut/tidb,ngaut/tidb,ngaut/tidb,ngaut/tidb,kyle-wang/tidb,kyle-wang/tidb,c4pt0r/tidb,c4pt0r/tidb,c4pt0r/tidb,c4pt0r/tidb,c4pt0r/tidb