Merge pull request #748 from xuwei-k/override-hashCode

override HostAndPort#hashCode

src/main/java/redis/clients/jedis/HostAndPort.java

@@ -33,6 +33,11 @@ public class HostAndPort {
 	return false;
     }
 
+    @Override
+    public int hashCode() {
+        return 31 * convertHost(host).hashCode() + port;
+    }
+
     @Override
     public String toString() {
 	return host + ":" + port;