Updates to use new spring-cloud-starter-bootstrap.

This opts in to enabling bootstrap via the classpath.

If s-c-k8s gets a ConfigData impl, this may need to change to put the property on individual tests.

spring-cloud-kubernetes-config/pom.xml

@@ -54,7 +54,12 @@
 
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
-			<artifactId>spring-cloud-context</artifactId>
+			<artifactId>spring-cloud-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-bootstrap</artifactId>
 		</dependency>
 
 		<dependency>