Issue with Jsonpath matcher and in getting data from request body having json field name with dot(.) eg "first.name"

[vishal-IAG]

Description of the bug

Issue with Jsonpath matcher and in getting data from request body having json field name with dot(.) eg "first.name"

Steps to reproduce the issue

1. Request json body:
   { "first.name" : "NAME1"}

2. Try to get data using tempating as mentioned in hoverfly doc https://docs.hoverfly.io/en/latest/pages/keyconcepts/templating/templating.html
   {
   "name" : " {{Request.Body 'jsonpath' '$["first.name"]' }}"
   }

or

{
"name" : " {{Request.Body 'jsonpath' '$[first.name]' }}"
}

Observed result

Hoverfly error messages seen (If none, say none)
none

Hoverfly response
{
"name" : ""
}

If possible, add screenshots to help explain your problem

Expected result

Hoverfly response
{
"name" : "NAME1"
}

Additional relevant information

1. Hoverfly version: 0.14.4
2. Anything that might help us to diagnose the problem

[tommysitu]

Unfortunately, the jsonpath library hoverfly uses can't handle this properly: https://github.com/kubernetes/client-go/tree/master/util/jsonpath