adding snapshot repo to parent pom so that commons project can be resolved

spring-integration-parent/pom.xml

@@ -433,6 +433,11 @@
 			<name>Spring Framework Maven Milestone Repository</name>
 			<url>http://maven.springframework.org/milestone</url>
 		</repository>
+		<repository>
+			<id>repository.springframework.maven.snapshot</id>
+			<name>Spring Framework Maven Snapshot Repository</name>
+			<url>http://maven.springframework.org/snapshot</url>
+		</repository>
 		<repository>
 			<!-- necessary for org.springframework.build.aws.maven dependency -->
 			<id>repository.source.maven.release</id>