Add boostrap and eureka-client samples

bootstrap/src/main/java/demo/BootstrapClientApplication.java

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+package demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Dave Syer
+ */
+@SpringBootApplication
+public class BootstrapClientApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(BootstrapClientApplication.class, args);
+	}
+}

bootstrap/src/main/resources/application.yml

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+server:
+  display-name: SAMPLE
+spring:
+  application:
+    name: client

bootstrap/src/main/resources/bootstrap.yml

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+spring:
+  config:
+# N.B. you don't normally want to do this in a real app. It switches 
+# off the local application.yml:
+    name: sample
+logging:
+  level:
+    org.springframework.boot: DEBUG

bootstrap/src/main/resources/sample.yml

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+server:
+  port: 8686
+  tomcat:
+    max-threads: 2

bootstrap/src/test/java/demo/BootstrapClientApplicationTests.java

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+package demo;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.web.ServerProperties;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.boot.test.WebIntegrationTest;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = BootstrapClientApplication.class)
+@WebIntegrationTest("server.port=0")
+@DirtiesContext
+public class BootstrapClientApplicationTests {
+
+	@Autowired
+	private ServerProperties server;
+
+	@Test
+	public void contextLoads() throws Exception {
+		assertEquals(2, this.server.getTomcat().getMaxThreads());
+		// The application.yml is never read because spring.config.name=sample
+		assertEquals("application", this.server.getDisplayName());
+	}
+
+}