Metadata type out of coordinates (#1491)

Fix for metadata type that contains `/` (slash), as right now the layout get messed up in such cases. Originally, the "type" was filename, and GAV are the coordinates, but with this simple change, we can (re)use Resolver to resolve files that are not in "addressable space", but still have all the benefit of caching/auth etc.

Author: cstamas

maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/DefaultLocalPathComposer.java

@@ -89,13 +89,19 @@ public String getPathForMetadata(Metadata metadata, String repositoryKey) {
     }
 
     private String insertRepositoryKey(String metadataType, String repositoryKey) {
-        String result;
-        int idx = metadataType.indexOf('.');
-        if (idx < 0) {
-            result = metadataType + '-' + repositoryKey;
+        if (metadataType.contains("/") && !metadataType.endsWith("/")) {
+            int lastSlash = metadataType.lastIndexOf('/');
+            return metadataType.substring(0, lastSlash + 1)
+                    + insertRepositoryKey(metadataType.substring(lastSlash + 1), repositoryKey);
         } else {
-            result = metadataType.substring(0, idx) + '-' + repositoryKey + metadataType.substring(idx);
+            String result;
+            int idx = metadataType.indexOf('.');
+            if (idx < 0) {
+                result = metadataType + '-' + repositoryKey;
+            } else {
+                result = metadataType.substring(0, idx) + '-' + repositoryKey + metadataType.substring(idx);
+            }
+            return result;
         }
-        return result;
     }
 }