INT-2998: Channel Adapters' Lifecycle Refactoring

* Add XSD attributeGroup `smartLifeCycleAttributeGroup`
* Use it for all adapters tags
* Refactoring `AbstractChannelAdapterParser` hierarchy
* Refactoring some `MessageHandler`'s that should not have `autoStartup` & `phase`.
    It is the responsibility of `AbstrctEndpoint`
* Polishing some tests according new logic

JIRA: https://jira.springsource.org/browse/INT-2998

INT-2998: Polishing

Polishing

 - Reformat schemas where indentation changed
 - Add SLC to the UDP inbound adapter

spring-integration-ws/src/main/resources/org/springframework/integration/ws/config/spring-integration-ws-3.0.xsd

@@ -239,7 +239,6 @@
 				</xsd:annotation>
 			</xsd:attribute>
 			<xsd:attribute name="order" type="xsd:string"/>
-			<xsd:attribute name="auto-startup" type="xsd:string" default="true"/>
 			<xsd:attribute name="header-mapper">
 				<xsd:annotation>
 					<xsd:documentation>
@@ -272,6 +271,7 @@ this list can also be simple patterns to be matched against the header names (e.
 						]]></xsd:documentation>
 				</xsd:annotation>
 			</xsd:attribute>
+			<xsd:attributeGroup ref="integration:smartLifeCycleAttributeGroup"/>
 		</xsd:complexType>
 	</xsd:element>