Java Driver: added jwt authentication (#856)

Author: rashtao

drivers/java-reference-setup.md

@@ -15,11 +15,12 @@ ArangoDB arangoDB = new ArangoDB.Builder().build();
 The driver is configured with some default values:
 
 | property-key             | description                             | default value  |
-| ------------------------ | --------------------------------------- | -------------- |
+|--------------------------|-----------------------------------------| -------------- |
 | arangodb.hosts           | ArangoDB hosts                          | 127.0.0.1:8529 |
 | arangodb.timeout         | connect & request timeout (millisecond) | 0              |
-| arangodb.user            | Basic Authentication User               |
-| arangodb.password        | Basic Authentication Password           |
+| arangodb.user            | Basic Authentication User               | root           |
+| arangodb.password        | Basic Authentication Password           |                |
+| arangodb.jwt             | Authentication JWT                      |                |
 | arangodb.useSsl          | use SSL connection                      | false          |
 | arangodb.chunksize       | VelocyStream Chunk content-size (bytes) | 30000          |
 | arangodb.connections.max | max number of connections               | 1 VST, 20 HTTP |