Adds boot 2.3 compatiblity

spring-cloud-commons/src/main/java/org/springframework/cloud/configuration/SpringBootVersionVerifier.java

@@ -40,6 +40,7 @@ class SpringBootVersionVerifier implements CompatibilityVerifier {
 			this.put("2.0", is2_0());
 			this.put("2.1", is2_1());
 			this.put("2.2", is2_2());
+			this.put("2.3", is2_3());
 		}
 	};
 
@@ -162,6 +163,30 @@ class SpringBootVersionVerifier implements CompatibilityVerifier {
 		};
 	}
 
+	CompatibilityPredicate is2_3() {
+		return new CompatibilityPredicate() {
+
+			@Override
+			public String toString() {
+				return "Predicate for Boot 2.3";
+			}
+
+			@Override
+			public boolean isCompatible() {
+				try {
+					// since 2.3
+					Class.forName(
+							"org.springframework.boot.context.propertie.BoundConfigurationProperties");
+					return true;
+				}
+				catch (ClassNotFoundException e) {
+					return false;
+				}
+
+			}
+		};
+	}
+
 	private String errorDescription() {
 		String versionFromManifest = getVersionFromManifest();
 		if (StringUtils.hasText(versionFromManifest)) {

spring-cloud-commons/src/test/java/org/springframework/cloud/configuration/SpringBootDependencyTests.java

@@ -144,7 +144,7 @@ public class SpringBootDependencyTests {
 
 	@Test
 	public void should_match_against_current_manifest() {
-		List<String> acceptedVersions = Collections.singletonList("2.2");
+		List<String> acceptedVersions = Collections.singletonList("2.3");
 		SpringBootVersionVerifier versionVerifier = new SpringBootVersionVerifier(
 				acceptedVersions);
 		versionVerifier.ACCEPTED_VERSIONS.clear();

spring-cloud-loadbalancer/pom.xml

@@ -22,6 +22,10 @@
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-context</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-validation</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-actuator</artifactId>