Hardening/harness test cleanup round 2

All tests using orionCurl super function now plus a couple of minor bugs.
I'm getting an error that seems to be related with content length in the /version operation:

```
fermin@debvm:~/src/fiware-orion$ test/functionalTest/testHarness.sh test/functionalTest/cases/version_via_rest.test 
001/1: version_via_rest.test ... (ERROR 9) 1 seconds

Orion Functional Test Log File:
================================================================================
Orion Functional tests starting
Thu Jun 26 05:55:05 CEST 2014

-----  broker version via REST  -----
(version_via_rest.test) output not as expected
VALIDATION ERROR: input line:
   Content-Length: 284
does not match ref line:
   Content-Length: 283


================================================================================

----------- Failing tests ------------------
  o  version_via_rest.test
```

Could somebody check if that also happens in its environment? (to discard local cause in my machine)