Feature Proposal: add create/update users method

[amommendes]

Currently, we do not have implemented in the Gremlin and Neptune proxy the method to create or update Amundsen users, which turns difficult to use features related to users, as ownership, popular table, and so on.

Expected Behavior or Use Case

Create users programmatically, for example, as implemented here

Possible Implementation

Example Screenshots (if appropriate):

Method to be implemented

[feng-tao]

Make sense, feel free to upstream the change. Thanks!

[stale[bot]]

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[amommendes]

keep fresh