QPID-8353: [Broker-J] Add TLSv1.3 into TLS protocol preferences

This closes #38
diff --git a/broker-core/src/main/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtil.java b/broker-core/src/main/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtil.java
index 0ffab92..01c11d3 100644
--- a/broker-core/src/main/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtil.java
+++ b/broker-core/src/main/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtil.java
@@ -43,7 +43,6 @@
 import java.security.NoSuchAlgorithmException;
 import java.security.Principal;
 import java.security.PrivateKey;
-import java.security.SecureRandom;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateException;
 import java.security.cert.CertificateFactory;
@@ -89,10 +88,7 @@
     private static final Logger LOGGER = LoggerFactory.getLogger(SSLUtil.class);
 
     private static final Integer DNS_NAME_TYPE = 2;
-    private static final String[] TLS_PROTOCOL_PREFERENCES = new String[]{"TLSv1.2", "TLSv1.1", "TLS", "TLSv1"};
-
-
-    private static final SecureRandom RANDOM = new SecureRandom();
+    private static final String[] TLS_PROTOCOL_PREFERENCES = new String[]{"TLSv1.3", "TLSv1.2", "TLSv1.1", "TLS", "TLSv1"};
 
 
     private static final Constructor<?> CONSTRUCTOR;
diff --git a/broker-core/src/test/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtilTest.java b/broker-core/src/test/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtilTest.java
index 7498b6a..81d928a 100644
--- a/broker-core/src/test/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtilTest.java
+++ b/broker-core/src/test/java/org/apache/qpid/server/transport/network/security/ssl/SSLUtilTest.java
@@ -72,9 +72,9 @@
     {
         List<String> whiteList = Arrays.asList("TLSv1\\.[0-9]+");
         List<String> blackList = Collections.emptyList();
-        String[] enabled = {"TLS", "TLSv1.1", "TLSv1.2"};
-        String[] expected = {"TLSv1.1", "TLSv1.2"};
-        String[] supported = {"SSLv3", "TLS", "TLSv1", "TLSv1.1", "TLSv1.2"};
+        String[] enabled = {"TLS", "TLSv1.1", "TLSv1.2", "TLSv1.3"};
+        String[] expected = {"TLSv1.1", "TLSv1.2", "TLSv1.3"};
+        String[] supported = {"SSLv3", "TLS", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3"};
         String[] result = SSLUtil.filterEntries(enabled, supported, whiteList, blackList);
         assertTrue("unexpected filtered list: expected " + Arrays.toString(expected) + " actual " + Arrays.toString(
                 result), Arrays.equals(expected, result));
@@ -85,9 +85,9 @@
     {
         List<String> whiteList = Arrays.asList();
         List<String> blackList = Arrays.asList("TLSv1\\.[0-9]+");
-        String[] enabled = {"TLS", "TLSv1.1", "TLSv1.2"};
+        String[] enabled = {"TLS", "TLSv1.1", "TLSv1.2", "TLSv1.3"};
         String[] expected = {"TLS"};
-        String[] supported = {"SSLv3", "TLS", "TLSv1", "TLSv1.1", "TLSv1.2"};
+        String[] supported = {"SSLv3", "TLS", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3"};
         String[] result = SSLUtil.filterEntries(enabled, supported, whiteList, blackList);
         assertTrue("unexpected filtered list: expected " + Arrays.toString(expected) + " actual " + Arrays.toString(
                 result), Arrays.equals(expected, result));