Add ZK test README (#10543)
Add ZK test README (#10543)

* Add ZK test README

* Apply suggestions from code review

Co-authored-by: Austin Lai <dfe221f9dfc17457a11b0c35569a01a8021fea22@users.noreply.github.com>

* File Nit

Co-authored-by: Austin Lai <dfe221f9dfc17457a11b0c35569a01a8021fea22@users.noreply.github.com>
DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core