JCRVLT-706 Use legacy type severity for mixed packages inside containers (#291)

diff --git a/vault-validation/src/main/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidator.java b/vault-validation/src/main/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidator.java
index 334553a..d887aea 100644
--- a/vault-validation/src/main/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidator.java
+++ b/vault-validation/src/main/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidator.java
@@ -312,8 +312,8 @@
             }
             break;
         case CONTAINER:
-            if (packageType != PackageType.APPLICATION && packageType != PackageType.CONTAINER && packageType != PackageType.CONTENT) {
-                message = new ValidationMessage(severity, String.format(MESSAGE_UNSUPPORTED_SUB_PACKAGE_OF_TYPE, containerPackageType,
+            if (packageType == PackageType.MIXED) {
+                message = new ValidationMessage(severityForLegacyType, String.format(MESSAGE_UNSUPPORTED_SUB_PACKAGE_OF_TYPE, containerPackageType,
                         StringUtils.join(new String[] { PackageType.APPLICATION.toString(), PackageType.CONTENT.toString(),
                                 PackageType.CONTAINER.toString() }, ", "),
                         packageType));
diff --git a/vault-validation/src/test/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidatorTest.java b/vault-validation/src/test/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidatorTest.java
index b1d6015..61d97eb 100644
--- a/vault-validation/src/test/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidatorTest.java
+++ b/vault-validation/src/test/java/org/apache/jackrabbit/vault/validation/spi/impl/PackageTypeValidatorTest.java
@@ -175,11 +175,15 @@
         MatcherAssert.assertThat(validator.validate(properties), AnyValidationViolationMessageMatcher.noValidationViolationMessageInCollection());
 
         Mockito.when(parentContainerProperties.getPackageType()).thenReturn(PackageType.CONTAINER);
-        
+
         // validate sub packages of type Mixed
         Mockito.when(properties.getPackageType()).thenReturn(PackageType.MIXED);
         PackageTypeValidator subPackageValidator = new PackageTypeValidator(filter, ValidationMessageSeverity.ERROR, ValidationMessageSeverity.WARN, ValidationMessageSeverity.INFO, false, false, false, false, PackageType.MIXED, PackageTypeValidatorFactory.DEFAULT_JCR_INSTALLER_NODE_PATH_REGEX, PackageTypeValidatorFactory.DEFAULT_JCR_INSTALLER_ADDITIONAL_FILE_NODE_PATH_REGEX, PackageTypeValidatorFactory.DEFAULT_IMMUTABLE_ROOT_NODE_NAMES, parentContainerContext);
-        ValidationExecutorTest.assertViolation(subPackageValidator.validate(properties), new ValidationMessage(ValidationMessageSeverity.ERROR, String.format(PackageTypeValidator.MESSAGE_UNSUPPORTED_SUB_PACKAGE_OF_TYPE, PackageType.CONTAINER, StringUtils.join(new String[] {PackageType.APPLICATION.toString(),PackageType.CONTENT.toString(),PackageType.CONTAINER.toString()}, ", "),  PackageType.MIXED)));
+        ValidationExecutorTest.assertViolation(subPackageValidator.validate(properties),
+                ValidationMessageSeverity.INFO,
+                new ValidationMessage(ValidationMessageSeverity.INFO, String.format(PackageTypeValidator.MESSAGE_UNSUPPORTED_SUB_PACKAGE_OF_TYPE, PackageType.CONTAINER, StringUtils.join(new String[] {PackageType.APPLICATION.toString(),PackageType.CONTENT.toString(),PackageType.CONTAINER.toString()}, ", "),  PackageType.MIXED)),
+                new ValidationMessage(ValidationMessageSeverity.INFO, String.format(PackageTypeValidator.MESSAGE_LEGACY_TYPE, PackageType.MIXED))
+        );
 
         // validate sub packages of type Content
         subPackageValidator = new PackageTypeValidator(filter, ValidationMessageSeverity.ERROR, ValidationMessageSeverity.WARN, ValidationMessageSeverity.INFO, false, false, false, false,  PackageType.CONTENT, PackageTypeValidatorFactory.DEFAULT_JCR_INSTALLER_NODE_PATH_REGEX, PackageTypeValidatorFactory.DEFAULT_JCR_INSTALLER_ADDITIONAL_FILE_NODE_PATH_REGEX, PackageTypeValidatorFactory.DEFAULT_IMMUTABLE_ROOT_NODE_NAMES, parentContainerContext);