Give more info on func validator failures
Give more info on func validator failures

Not sure how best to test this - open to any suggestions.  Also not a
huge fan of the way I'm giving the info, but can't think of a better way
without breaking any previous use that already handled errors in a
particular way.

alonsodomin/troposphere,alonsodomin/troposphere,ikben/troposphere,ikben/troposphere,dmm92/troposphere,johnctitus/troposphere,horacio3/troposphere,horacio3/troposphere,pas256/troposphere,pas256/troposphere,7digital/troposphere,cloudtools/troposphere,cloudtools/troposphere,Yipit/troposphere,johnctitus/troposphere,dmm92/troposphere,7digital/troposphere