Hard-wire external associations: 3 sections in, this one is 4/7 (#645)

* Continue rebasing.

* Wrote unit tests for external associations.

* Fix the generated SQL.

Some syntactic sugar (capitalizing the keywords), but use the 'ON' syntax on JOINs.

* whitespace fix post rebase

* We want "management.cattle.io.projects:spec.displayName" not "...spec.clusterName"

* Fix the database calls: drop the key

* Fix breakage during automatic rebase merging gone wrong.

* ws fix - NFC

* Post rebase-merge fixes

* Fix rebase-driven merge.

* Fix rebase breakage.

* go-uber v0.5.2 prefers real arg names to '<argN>'

pkg/sqlcache/informer/listoption_indexer_test.go

@@ -50,7 +50,7 @@ func makeListOptionIndexer(ctx context.Context, opts ListOptionIndexerOptions) (
 		return nil, "", err
 	}
 
-	s, err := store.NewStore(ctx, example, cache.DeletionHandlingMetaNamespaceKeyFunc, db, false, name)
+	s, err := store.NewStore(ctx, example, cache.DeletionHandlingMetaNamespaceKeyFunc, db, false, gvk, name, nil)
 	if err != nil {
 		return nil, "", err
 	}