Make generated files naming uniform

[mlavacca]

Problem Statement

We always prefixed our generated files with zz_generated_, but during the effort of refactoring the konnect ops package in #764 , such a naming convention has been changed to zz_generated., fo follow upstream guidelines (https://github.com/kubernetes/kubernetes/blob/e39571591d2917ca642f47ebca11253a91793c4b/.generated_files#L17). We need to update all the other generated files as well to adhere to such a naming convention.

Acceptance Criteria

• All the generated files are prefixed with zz_generated.