Initialize same modules only once per VM
Initialize same modules only once per VM

This initializes static fields with configureSkylarkFunctions and
should only be called once per class registered.

We had several tests failing because of this and probably the
sync read config from change was also broken.

PiperOrigin-RevId: 178330277
Change-Id: Iab40513f090d996e2c62d2bc41b2a7472d2ff131

google/copybara,google/copybara,google/copybara