Update test_ssl.py to reflect the new approach for writing network-oriented tests in such a way that contention for ports is eliminated, thus allowing multiple instances of the same test to be run in parallel without issue (import for buildbots to run smoothly).  This change is in line with the changes made to network-oriented tests in trunk in r62234.  test_ssl.py is an odd case because the py3k version was newer than trunk.  When the most recent svnmerge was run from trunk to py3k in r62242, the older trunk version was brought over on top of the newer py3k version.  So, the plan was/is: revert the recent svnmerged version (done), manually make the changes to improve running in parallel (done with this commit), copy this version back to trunk and manually 3to2 it (to do next), check that in, then svnmerge block it.  Then when future changes need to be made to test_ssl.py, we can make them against trunk, and hopefully the merge to py3k should be a lot less painful.