Update Avocado to 2.0.24 Serrano to 2.0.16 and Cilantro to 2.0.11
Update Avocado to 2.0.24 Serrano to 2.0.16 and Cilantro to 2.0.11

From internal changes on 12/4

chop-dbhi/varify,chop-dbhi/varify,chop-dbhi/varify,chop-dbhi/varify