Intermittent search test failure: verify searching discussion library

```
[0m  1) Discussion Library Search Library search verify searching through a discussion library:
[0m[31m     Uncaught [0m[90m
  AssertionError: 2 == 1
      at /home/travis/build/oaeproject/Hilary/node_modules/oae-discussions/tests/test-library-search.js:55:36
      at module.exports.searchAll.MqTestsUtil.whenTasksEmpty.MqTestsUtil.whenTasksEmpty.getMoreResults (/home/travis/build/oaeproject/Hilary/node_modules/oae-search/lib/test/util.js:58:36)
      at Request._callback (/home/travis/build/oaeproject/Hilary/node_modules/oae-rest/lib/util.js:202:16)
      at Request.init.self.callback (/home/travis/build/oaeproject/Hilary/node_modules/request/index.js:148:22)
      at Request.EventEmitter.emit (events.js:99:17)
      at Request.onResponse (/home/travis/build/oaeproject/Hilary/node_modules/request/index.js:891:14)
      at Request.EventEmitter.emit (events.js:126:20)
      at IncomingMessage.Request.onResponse.buffer (/home/travis/build/oaeproject/Hilary/node_modules/request/index.js:842:12)
      at IncomingMessage.EventEmitter.emit (events.js:126:20)
      at IncomingMessage._emitEnd (http.js:367:10)
```

This uses random text to try and test certain discussions don't match. This test can probably just ensure an expected match *does* return with a higher score, not so much that something falls below the score threshold because that is flakey.