Prove that NameRes can sustain 20 sequential queries with a maximum of 10 seconds pause between them

[gaurav]

• Check what that rate is: 20 sequential queries with a maximum of 10 seconds pause between each query
• Add a test for it (Add integration tests and index-wide tests #112)
• See if we can track the actual stats once Jaegar has been integrated (Add Jaegar tracking in NameRes #105).

[gaurav]

For the 33 test rows currently in the Unit Tests file, NameRes Prod took 20 seconds (0.48 seconds/query) as per the tests in TranslatorSRI/babel-validation#27. Subsequent queries take about 7 seconds, but I think that's because Solr is caching the results. I'll add additional tests for #107 when I get to that ticket, but since the only remaining piece is covered by #105, I'll go ahead and close this ticket.