Make sure the httpd started exits with the test.

Now green when run in sequence:

Test Results:
pb_cipher_suites-bitcask: pass
pb_security-bitcask     : pass
---------------------------------------------
0 Tests Failed
2 Tests Passed
That's 100.0% for those keeping score
Merge pull request #717 from basho/bugfix/sdc/cert-name-collisions

Fix pb_security failures