Fix uuu boot failure retry not work issue.
We need uuu commands could be retried to make auto system more stable, e.g. internal imx8mm boards with old ROM in chip may have issue in usb support which has low probability to make uuu failure.
The old code is next:
class UUUBootRetry(RetryAction, OptionalContainerUuuAction): name = "uuu-retry" def populate(self, parameters): self.pipeline = Pipeline(parent=self, job=self.job, parameters=parameters)
It just define an internal pipeline in RetryAction without add any actions to internal pipeline, which definitely can't work with failure retry.
This PR fix the issue & let uuu boot could benefit from failure retry.