Cumulus no longer accepts lists in yaml

[mazzystr]

We have yaml that looks like the following...
WebIds:
-
source : SystemsAzA
type : resource
variable : Web1
-
source : SystemsAzB
type : resource
variable : Web1

Where cumulus passes the value of WebIds to a csv parameter in a cf template

Looks like commit e199287 broke this functionality since item['value']) is being casted to string CFStack.py(109)