use the local mule client in the integration tests where possible

Conflicts:
	tests/integration/src/test/java/org/mule/context/notification/ExceptionNotificationTestCase.java
	tests/integration/src/test/java/org/mule/context/notification/ExceptionStrategyNotificationTestCase.java
	tests/integration/src/test/java/org/mule/context/notification/processors/AbstractMessageProcessorNotificationTestCase.java
	tests/integration/src/test/java/org/mule/context/notification/processors/MessageProcessorNotificationTestCase.java
	tests/integration/src/test/java/org/mule/context/notification/processors/MulticastingRouterNotificationTestCase.java
	tests/integration/src/test/java/org/mule/module/xml/functional/SimpleXmlTransformerFunctionalTestCase.java
	tests/integration/src/test/java/org/mule/test/integration/config/DisableTimeoutsConfigTestCase.java
	tests/integration/src/test/java/org/mule/test/integration/exceptions/MessageContextTestCase.java
	tests/integration/src/test/java/org/mule/test/integration/interceptor/InterceptorFlowTestCase.java
	tests/integration/src/test/java/org/mule/test/integration/messaging/meps/InOutTestCase.java
	tests/integration/src/test/java/org/mule/test/integration/messaging/meps/MessagePropertiesPropagationTestCase.java
	tests/integration/src/test/java/org/mule/test/integration/models/AbstractPipelineTestCase.java
MULE-7137: Fixing test

Conflicts:
	tests/integration/src/test/java/org/mule/test/integration/construct/BridgeTestCase.java