Add a "name" field to the generated JSON for batcharchive
Add a "name" field to the generated JSON for batcharchive

Otherwise, the go implementation of batcharchive only ends up recording a
single hash under the name 'hadoop', since all invocations are from the same
'hadoop.isolate' file.

xiao-chen/dist_test,umbrant/dist_test,cloudera/dist_test,cloudera/dist_test,xiao-chen/dist_test,cloudera/dist_test,xiao-chen/dist_test,umbrant/dist_test,xiao-chen/dist_test,umbrant/dist_test,umbrant/dist_test,cloudera/dist_test