move integrated api client to requests library

The integrated api client previously did the HTTPConnection /
HTTPSConnection url parsing dance. In python 2.x HTTPSConnection
doesn't care about SSL certs at all. While not actually an issue for
these tests, it does mean we keep around an example in the code that
uses HTTPSConnection, which will prevent us from creating a hacking
rule to keep those out once the other 4 actual security issues with
HTTPSConnection are removed.

Change-Id: Idd7d5a055600dda663f9c56b39883510f8688b12
Related-Bug: #1188189
(cherry picked from commit 777a5870c9f29949e6af704bfa03c2e204065ab1)