Precision problem in Retrieval Controller

[dukefoss]

Description:
The similarity value returned from Retrieval methods have a number precision problem. It is unpredictable whether the last number is rounded up or down or if the error occurs at all.

Steps to reproduce:

1. Run the test "RetrievalControllerIntegrationTest"
2. Rerun if the problem did not occur.

Expected and Actual Result:

Note:

• This is a problem when running the tests. The same problem does not occur in REST API or MyCBR Workbench.
• The error happens to all tests in "RetrievalControllerIntegrationTest"