Give tests copy-pastable identifiers in nose testing

This patch fixes an annoyance.

Currently, failing nosetests are printed like this
```
======================================================================
FAIL: test_the_name (ion.services.sa.test.test_nosetest_namimg.TestNaming)
----------------------------------------------------------------------
```

This patch prints them like this:
```
======================================================================
FAIL: test_the_name ( ion.services.sa.test.test_nosetest_namimg:TestNaming.test_the_name )
----------------------------------------------------------------------
```

Unlike the current format, "ion.services.sa.test.test_nosetest_namimg:TestNaming.test_the_name" can be pasted directly into the nosetests command line.