Add runner tests which send intermediate certificates.

Certificate chain with intermediate taken from Chromium's tests. Though
it doesn't really matter because the runner tests don't verify
certificates.

BUG=70

Change-Id: I46fd1d4be0f371b5bfd43370b97d2c8053cfad60
Reviewed-on: https://boringssl-review.googlesource.com/12261
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>

ssl/test/test_config.cc

diff --git a/ssl/test/test_config.cc b/ssl/test/test_config.cc
index 3d3ecd8..c0fe3c4 100644
--- a/ssl/test/test_config.cc
+++ b/ssl/test/test_config.cc
@@ -131,6 +131,7 @@
   { "-cipher-tls11", &TestConfig::cipher_tls11 },
   { "-export-label", &TestConfig::export_label },
   { "-export-context", &TestConfig::export_context },
+  { "-expect-peer-cert-file", &TestConfig::expect_peer_cert_file },
 };
 
 const Flag<std::string> kBase64Flags[] = {