Prometheus check use a mock response (#982)
Prometheus check use a mock response (#982)

* kubernetes_state: use MockResponse to patch poll

DataDog/integrations-core,serverdensity/sd-agent-core-plugins,DataDog/integrations-core,serverdensity/sd-agent-core-plugins,serverdensity/sd-agent-core-plugins,DataDog/integrations-core,serverdensity/sd-agent-core-plugins,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,serverdensity/sd-agent-core-plugins,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core