Add TLS 1.3 version of EmptyCertificateList.

It tests the same thing right now with Fake TLS 1.3, but we'll need this
tested in real TLS 1.3.

Change-Id: Iacd32c2d4e56d341e5709a2ccd80fed5d556c94d
Reviewed-on: https://boringssl-review.googlesource.com/8783
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

ssl/test/runner/runner.go

@@ -1378,6 +1378,18 @@ func addBasicTests() {
 			shouldFail:    true,
 			expectedError: ":DECODE_ERROR:",
 		},
+		{
+			name: "EmptyCertificateList-TLS13",
+			config: Config{
+				MaxVersion:   VersionTLS13,
+				CipherSuites: []uint16{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256},
+				Bugs: ProtocolBugs{
+					EmptyCertificateList: true,
+				},
+			},
+			shouldFail:    true,
+			expectedError: ":DECODE_ERROR:",
+		},
 		{
 			name:             "TLSFatalBadPackets",
 			damageFirstWrite: true,