fix(builder): suppress stderr

We don't need to know that parsing the object failed, as we're going
to print the controller response shortly after. These errors do not
provide anything useful. It's the controller response that we're
interested in.

Author: Matthew Fisher

builder/templates/builder

@@ -94,11 +94,12 @@ RESPONSE=$(curl -s -XPOST \
      $URL)
 
 # massage response for the environment variables in form HELLO=world
-CONFIG=$(echo $RESPONSE | python -c 'import json,sys;obj=json.load(sys.stdin);print obj["values"]' | jq -c -M "to_entries|map(\"\(.key)=\(.value|tostring)\")|.[]" || echo $RESPONSE)
+CONFIG=$(echo $RESPONSE | python -c 'import json,sys;obj=json.load(sys.stdin);print obj["values"]' | jq -c -M "to_entries|map(\"\(.key)=\(.value|tostring)\")|.[]" 2> /dev/null || echo $RESPONSE)
 
 if [ "$CONFIG" == "$RESPONSE" ];
 then
-    echo $RESPONSE
+    puts-warn "failed retrieving config from controller"
+    puts-warn $RESPONSE
     exit 1
 fi
 
@@ -171,11 +172,13 @@ RESPONSE=$(curl -s -XPOST \
      --data "$DATA" \
      $URL)
 
-RELEASE=$(echo $RESPONSE | python -c 'import json,sys;obj=json.load(sys.stdin);print obj["release"]["version"]' || echo $RESPONSE)
+RELEASE=$(echo $RESPONSE | python -c 'import json,sys;obj=json.load(sys.stdin);print obj["release"]["version"]' 2> /dev/null || echo $RESPONSE)
 
 if [ "$RELEASE" == "$RESPONSE" ];
 then
-    echo $RESPONSE
+    # we're printing inline with "Launching..."
+    echo "failed"
+    puts-warn $RESPONSE
     exit 1
 fi