Re-enables disabled tests.

Fixes gh-1042

spring-cloud-context/src/test/java/org/springframework/cloud/context/properties/ConfigurationPropertiesRebinderListIntegrationTests.java

@@ -56,7 +56,6 @@ public class ConfigurationPropertiesRebinderListIntegrationTests {
 
 	@Test
 	@DirtiesContext
-	@Disabled("caused by https://github.com/spring-projects/spring-boot/issues/28776")
 	public void testAppendProperties() {
 		then(this.properties.getMessages()).containsOnly("one", "two");
 		TestPropertyValues.of("messages[0]:foo").applyTo(this.environment);

spring-cloud-context/src/test/java/org/springframework/cloud/context/properties/ConfigurationPropertiesRebinderProxyIntegrationTests.java

@@ -21,7 +21,6 @@
 
 import org.aspectj.lang.annotation.Aspect;
 import org.aspectj.lang.annotation.Before;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -56,7 +55,6 @@ public class ConfigurationPropertiesRebinderProxyIntegrationTests {
 
 	@Test
 	@DirtiesContext
-	@Disabled("caused by https://github.com/spring-projects/spring-boot/issues/28776")
 	public void testAppendProperties() throws Exception {
 		// This comes out as a String not Integer if the rebinder processes the proxy
 		// instead of the target

spring-cloud-context/src/test/java/org/springframework/cloud/context/scope/refresh/RefreshScopeListBindingIntegrationTests.java

@@ -20,7 +20,6 @@
 import java.util.List;
 import java.util.Map;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.aop.framework.Advised;
@@ -57,7 +56,6 @@ public class RefreshScopeListBindingIntegrationTests {
 
 	@Test
 	@DirtiesContext
-	@Disabled("caused by https://github.com/spring-projects/spring-boot/issues/28776")
 	public void testAppendProperties() throws Exception {
 		then("[one, two]").isEqualTo(this.properties.getMessages().toString());
 		then(this.properties instanceof Advised).isTrue();