Hello,

We would like to generate custom exports directly from ODCS.

Currently, --format custom flag calls custom_export.py that only deals with DCS.
#783 introduced html export using an odcs-specific default template.

To export using a custom template with DCS, user need to provide the following :

datacontract export --format custom --template my_template.jinja datacontract.yaml

Actual behavior :
Use {{ data_contract }} in your custom templates, but it exposes DCS fields only.

Expected behaviour :
{{ data_contract }} exposes all the fields relative to ODCS.