Add categorical_encoding option to GLM

[exalate-issue-sync[bot]]

Somehow, categorical_encoding was added to the other algos, but not GLM. Let's add it and make sure it gets piped through to client APIs.

http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science/algo-params/categorical_encoding.htm

[hasithjp]

JIRA Issue Migration Info

Jira Issue: PUBDEV-4924 Assignee: Tomas Nykodym Reporter: Erin LeDell State: Open Fix Version: N/A Attachments: N/A Development PRs: N/A

[ybayle]

Hi H2O team! Any update on this feature that's still missing cf https://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science/algo-params/categorical_encoding.html?

[hasithjp]

FYI @wendycwong @marek-mihok