updatehub-image-tasks.bbclass: Reduce code duplication
updatehub-image-tasks.bbclass: Reduce code duplication

Now we use a centralized place to run all uhu setup; this easy the
long term maintenance and makes it easy to further extend it.

Signed-off-by: Otavio Salvador <1d31b11c1b92bf5d043d36edfe7174db39a6b891@ossystems.com.br>

fbertux/meta-updatehub,UpdateHub/meta-updatehub,UpdateHub/meta-updatehub,UpdateHub/meta-updatehub,fbertux/meta-updatehub,fbertux/meta-updatehub