Add support for returning response.header in consoleFetchCommon function

 Add support for returning `response.header` in `consoleFetchCommon` function in the dynamic-plugin-sdk package

Problem: 

The `consoleFetchCommon function in the dynamic-plugin-sdk package lack the support for retrieving HTTP `response.header`. 

Justification:

 The policy warning responses are visible in the `oc cli` but not visible on the console UI.  The customer wants a similar behavior on the UI. The policy warning responses are returned in the HTTP `response.header` which is not implemented in the  `consoleFetchCommon` function currently.

Proposed Solution

 Add logic for extracting all `response.headers` along with `response.json` in the `consoleFetchCommon` function using `options` or something else. 

A.C. 

  Add an option parameter to `consoleFetchCommon` to conditionally return full `response` or `response.json` so that the k8s functions like "K8sCreate` consume either, preventing breaking change for dynamic plugins