Fix bug which sets nested config variables to unparsed json (#279)
Fix bug which sets nested config variables to unparsed json (#279)

Primitive values were parsed but the result was not used to set the variable, causing variables to be wrapped in escaped quotes.
firebase/firebase-tools,lguzzon/firebase-tools,firebase/firebase-tools,lguzzon/firebase-tools,firebase/firebase-tools,firebase/firebase-tools,firebase/firebase-tools