[#6457] Save result of mount_point validation

- Allows validator to return an alternate mount_point if the one
  passed in is already in use.

Signed-off-by: Tim Van Steenburgh <tvansteenburgh@gmail.com>
diff --git a/ForgeImporters/forgeimporters/google/code.py b/ForgeImporters/forgeimporters/google/code.py
index 60a0158..ed2519f 100644
--- a/ForgeImporters/forgeimporters/google/code.py
+++ b/ForgeImporters/forgeimporters/google/code.py
@@ -109,7 +109,7 @@
             raise
         tool_class = REPO_APPS[repo_type]
         try:
-            v.MountPointValidator(tool_class).to_python(mount_point)
+            value['mount_point'] = v.MountPointValidator(tool_class).to_python(mount_point)
         except fe.Invalid as e:
             raise fe.Invalid('mount_point:' + str(e), value, state)
         return value