Attempt to improve maven-surefire tests in Hudson and Travis (#267)

* Adding connection checks to WebSocket Tests

Signed-off-by: James Sutton <james.sutton@uk.ibm.com>

* Making WebSocket Handshake Sec-WebSocket-Key 16 bytes

Signed-off-by: James Sutton <james.sutton@uk.ibm.com>

* Running each test class in new fork

Signed-off-by: James Sutton <james.sutton@uk.ibm.com>

* Testing Travis issue with OfflineBufferingTest.testManyMessageBufferAndDeliver

Signed-off-by: James Sutton <james.sutton@uk.ibm.com>

* Removing accidential test log entry

Signed-off-by: James Sutton <james.sutton@uk.ibm.com>

Author: jpwsutton

org.eclipse.paho.client.mqttv3.test/pom.xml

@@ -47,6 +47,8 @@
 				<artifactId>maven-surefire-plugin</artifactId>
 				<version>2.15</version>
 				<configuration>
+					<reuseForks>false</reuseForks>
+        			<forkCount>1</forkCount>
 					<systemPropertyVariables>
 						<SERVER_URI>${test.server_uri}</SERVER_URI>
 					</systemPropertyVariables>