syncbase/vsync: Implementation for SyncGroup related getters and setspec.

Change-Id: I54697c9dd66a4ecd2a19507fbafc4dd7c9cc08f5
diff --git a/services/syncbase/server/nosql/database.go b/services/syncbase/server/nosql/database.go
index 7d900e7..2943a52 100644
--- a/services/syncbase/server/nosql/database.go
+++ b/services/syncbase/server/nosql/database.go
@@ -388,7 +388,7 @@
 	return d.a
 }
 
-func (d *database) CheckPermsInternal(ctx *context.T, call rpc.ServerCall, st store.StoreReadWriter) error {
+func (d *database) CheckPermsInternal(ctx *context.T, call rpc.ServerCall, st store.StoreReader) error {
 	if !d.exists {
 		vlog.Fatalf("database %q does not exist", d.name)
 	}