ups table file for jobsub_client lost the SL5-SL6 test
The UPS table file for jobsub_client used to test if the OS was SL5 or 6 . If 5, set up python and pycurl.
If 6, do nothing. Issue 6571 requested : test for a specific python version, if its setup then set up pycurl if not, set up the 'stock' python for SL5 and then set up pycurl.
These two tests need to both be present in the setup script, instead 6571 overwrote the original test.
Fix this for rc4