Inject the ValidatorFactory instead of Validator.

This prevents the Spring Validator Factory from being injected (it
does not support the 1.1 methods)

spring-shell-core/src/main/java/org/springframework/shell/Shell.java

@@ -30,6 +30,7 @@ import javax.annotation.PostConstruct;
 import javax.validation.ConstraintViolation;
 import javax.validation.Validation;
 import javax.validation.Validator;
+import javax.validation.ValidatorFactory;
 import javax.validation.executable.ExecutableValidator;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -64,7 +65,6 @@ public class Shell implements CommandRegistry {
 	@Autowired
 	protected ApplicationContext applicationContext;
 
-	@Autowired(required = false)
 	private Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
 
 	protected Map<String, MethodTarget> methodTargets = new HashMap<>();
@@ -81,6 +81,11 @@ public class Shell implements CommandRegistry {
 		this.resultHandler = resultHandler;
 	}
 
+	@Autowired(required = false)
+	public void setValidatorFactory(ValidatorFactory validatorFactory) {
+		this.validator = validatorFactory.getValidator();
+	}
+
 	@Override
 	public Map<String, MethodTarget> listCommands() {
 		return methodTargets;