Fixes associated with OkHttp fallback changes

OkHttp now selects from the available, enabled protocols rather
than forcing SSLv3 to be on. Without this change, if SSLv3 is not
part of the protocols enabled by default on the device this test
would fail.

Bug: 13228108
Change-Id: I5b89a73af9cf729dbf892f958fa318daa4109ff4