8006062: Add @Repeatable to repeating annotations regression tests in JDK repo

Reviewed-by: jjg

test/java/lang/annotation/repeatingAnnotations/subpackage/Containee.java

@@ -27,6 +27,7 @@ import java.lang.annotation.*;
 
 @Retention(RetentionPolicy.RUNTIME)
 @ContainedBy(Container.class)
+@Repeatable(Container.class)
 public @interface Containee {
     int value();
 }

test/java/lang/annotation/repeatingAnnotations/subpackage/InheritedContainee.java

@@ -28,6 +28,7 @@ import java.lang.annotation.*;
 @Inherited
 @Retention(RetentionPolicy.RUNTIME)
 @ContainedBy(InheritedContainer.class)
+@Repeatable(InheritedContainer.class)
 public @interface InheritedContainee {
     int value();
 }