Add POST to allowed CORS methods for CF actuators

Update CORS configuration to support POST.

See gh-7108

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/cloudfoundry/CloudFoundryActuatorAutoConfiguration.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.actuate.cloudfoundry;
 
+import java.util.Arrays;
 import java.util.LinkedHashSet;
 import java.util.Set;
 
@@ -32,6 +33,7 @@ import org.springframework.boot.web.client.RestTemplateBuilder;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.env.Environment;
+import org.springframework.http.HttpMethod;
 import org.springframework.web.cors.CorsConfiguration;
 import org.springframework.web.servlet.HandlerInterceptor;
 
@@ -86,6 +88,8 @@ public class CloudFoundryActuatorAutoConfiguration {
 	private CorsConfiguration getCorsConfiguration() {
 		CorsConfiguration corsConfiguration = new CorsConfiguration();
 		corsConfiguration.addAllowedOrigin(CorsConfiguration.ALL);
+		corsConfiguration.setAllowedMethods(
+				Arrays.asList(HttpMethod.GET.name(), HttpMethod.POST.name()));
 		return corsConfiguration;
 	}
 

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/cloudfoundry/CloudFoundryActuatorAutoConfigurationTests.java

@@ -32,9 +32,11 @@ import org.springframework.boot.autoconfigure.web.HttpMessageConvertersAutoConfi
 import org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration;
 import org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration;
 import org.springframework.boot.test.util.EnvironmentTestUtils;
+import org.springframework.http.HttpMethod;
 import org.springframework.mock.web.MockServletContext;
 import org.springframework.test.util.ReflectionTestUtils;
 import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.cors.CorsConfiguration;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -75,6 +77,11 @@ public class CloudFoundryActuatorAutoConfigurationTests {
 	public void cloudFoundryPlatformActive() throws Exception {
 		CloudFoundryEndpointHandlerMapping handlerMapping = x();
 		assertThat(handlerMapping.getPrefix()).isEqualTo("/cloudfoundryapplication");
+		CorsConfiguration corsConfiguration = (CorsConfiguration) ReflectionTestUtils
+				.getField(handlerMapping, "corsConfiguration");
+		assertThat(corsConfiguration.getAllowedOrigins()).contains("*");
+		assertThat(corsConfiguration.getAllowedMethods()).contains(HttpMethod.GET.name(),
+				HttpMethod.POST.name());
 	}
 
 	@Test