It's now possible to read something like that :
```json
{
  "foo": "bar",
  "FOO": "truc",
}
```
and use these variables:

```yml
- type: readfile
    path: the_file.json
    info: "{{.Result.ContentJSON.foo}}-{{.Result.ContentJSON.FOO}}"
```

Environment variable: VENOM_PRESERVE_CASE

venom 1.1.x
  VENOM_PRESERVE_CASE="AUTO" is equals to VENOM_PRESERVE_CASE="OFF"

venom 1.2.x
  VENOM_PRESERVE_CASE="AUTO" is equals to VENOM_PRESERVE_CASE="ON"

venom 1.1 users, you can try:

```sh
> export VENOM_PRESERVE_CASE="ON";
> venom run ...
```

close #522
close #547
close #522

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>

Signed-off-by: Yvonnick Esnault <yvonnick.esnault@corp.ovh.com>