Minor fixes

- Upgraded versions of reactor and SI in poms
- added .jdk8 to enable java-8 in build
- fixed changes in mockito api

pom.xml

@@ -23,7 +23,11 @@
         <rxjava-reactive-streams.version>1.2.1</rxjava-reactive-streams.version>
         <spring.tuple.version>1.0.0.RELEASE</spring.tuple.version>
         <spring.integration.tuple.version>1.0.0.RELEASE</spring.integration.tuple.version>
+<<<<<<< 57d3ba33176c3f792c733850bf6e4f99ec6af24a
         <reactor.version>Bismuth-RELEASE</reactor.version>
+=======
+        <reactor.version>Bismuth-M3</reactor.version>
+>>>>>>> Minor fixes
         <kryo-shaded.version>3.0.3</kryo-shaded.version>
         <objenesis.version>2.1</objenesis.version>
     </properties>

spring-cloud-stream/pom.xml

@@ -33,10 +33,18 @@
 		<dependency>
 			<groupId>org.springframework.integration</groupId>
 			<artifactId>spring-integration-core</artifactId>
+<<<<<<< 57d3ba33176c3f792c733850bf6e4f99ec6af24a
+=======
+			<version>5.0.0.BUILD-SNAPSHOT</version>
+>>>>>>> Minor fixes
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.integration</groupId>
 			<artifactId>spring-integration-jmx</artifactId>
+<<<<<<< 57d3ba33176c3f792c733850bf6e4f99ec6af24a
+=======
+			<version>5.0.0.BUILD-SNAPSHOT</version>
+>>>>>>> Minor fixes
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>

spring-cloud-stream/src/test/java/org/springframework/cloud/stream/binder/AbstractMessageChannelBinderTests.java

@@ -166,7 +166,7 @@ public class AbstractMessageChannelBinderTests {
 
 				@Override
 				public SimpleConsumerDestination answer(final InvocationOnMock invocation) throws Throwable {
-					return new SimpleConsumerDestination(invocation.getArgumentAt(0, String.class));
+					return new SimpleConsumerDestination(invocation.getArgument(0));
 				}
 
 			}).given(this.provisioningProvider).provisionConsumerDestination(anyString(), anyString(),
@@ -175,7 +175,7 @@ public class AbstractMessageChannelBinderTests {
 
 				@Override
 				public SimpleProducerDestination answer(final InvocationOnMock invocation) throws Throwable {
-					return new SimpleProducerDestination(invocation.getArgumentAt(0, String.class));
+					return new SimpleProducerDestination(invocation.getArgument(0));
 				}
 
 			}).given(this.provisioningProvider).provisionProducerDestination(anyString(),