defined topology spread constraints for whereami

[theemadnes]

Description

This PR adds topology spread constraints to the deployment specs for whereami (both http and gRPC modes)

Tasks

• [x ] The contributing guide has been read and followed.
• [ x] The samples added / modified have been fully tested.
• Workflow files have been added / modified, if applicable.
• Region tags have been properly added, if new samples.
• [ x] Editable variables have been used, where applicable.
• All dependencies are set to up-to-date versions, as applicable.
• [ x] Merge this pull-request for me once it is approved.

[bourgeoisor]

LGTM!