Fixes aggregator to not parse new json spec for semantic errors
Fixes aggregator to not parse new json spec for semantic errors

hsaputra/cdap,chtyim/cdap,hsaputra/cdap,caskdata/cdap,caskdata/cdap,chtyim/cdap,caskdata/cdap,caskdata/cdap,caskdata/cdap,mpouttuclarke/cdap,mpouttuclarke/cdap,chtyim/cdap,mpouttuclarke/cdap,chtyim/cdap,mpouttuclarke/cdap,caskdata/cdap,hsaputra/cdap,chtyim/cdap,hsaputra/cdap,mpouttuclarke/cdap,hsaputra/cdap,chtyim/cdap