[Feature Request] Support if/else condition

Is it possible to implement something that results to the following snippet ?

```
livenessProbe:
  exec:
    {{- if .Values.tls.enabled }}
    command: [ "sh", "-c", "curl -sSfk https://127.0.0.1:6385" ]
    {{- else }}
    command: [ "sh", "-c", "curl -sSfk http://127.0.0.1:6180/images" ]
    {{- end }}
```