Problem with resolving the landing page as default.html instead of index.html

[justsayantan]

I know there is a limitation of using the name of the page as index.html for landing page in DXA. But sometime in migration project client wants to use there old naming convention.
Like in our project they are using default.html for all the landing pages, as a result DXA is unable to resolve those landing pages url.

Is it configurable ? If not, Can you please make it configurable so that client can use their preference ?