update CHANGELOG and sdk cli doc

Author: estroz

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 - New option for [`operator-sdk build --image-builder`](https://github.com/operator-framework/operator-sdk/blob/master/doc/sdk-cli-reference.md#build), which can be used to specify which image builder to use. Adds support for [buildah](https://github.com/containers/buildah/). ([#1311](https://github.com/operator-framework/operator-sdk/pull/1311))
 - Manager is now configured with a new `DynamicRESTMapper`, which accounts for the fact that the default `RESTMapper`, which only checks resource types at startup, can't handle the case of first creating a CRD and then an instance of that CRD. ([#1329](https://github.com/operator-framework/operator-sdk/pull/1329))
-- New optional flags `--k8s-api` and `--k8s-import-path` for [`operator-sdk add controller`](https://github.com/operator-framework/operator-sdk/blob/master/doc/sdk-cli-reference.md#controller) to specify that the new controller reconciles a built-in Kubernetes API. ([#1344](https://github.com/operator-framework/operator-sdk/pull/1344))
+- New optional flag `--k8s-api-import` for [`operator-sdk add controller`](https://github.com/operator-framework/operator-sdk/blob/master/doc/sdk-cli-reference.md#controller) to specify that the new controller reconciles a built-in or external Kubernetes API, and what import path and identifier it should have. ([#1344](https://github.com/operator-framework/operator-sdk/pull/1344))
 
 ### Changed
 

doc/sdk-cli-reference.md

@@ -339,8 +339,7 @@ Adds a new controller under `pkg/controller/<kind>/...` that, by default, reconc
 
 * `--api-version` string - CRD APIVersion in the format `$GROUP_NAME/$VERSION` (e.g app.example.com/v1alpha1)
 * `--kind` string - CRD Kind. (e.g AppService)
-* `--k8s-api` - The provided kind for api-version is a Kubernetes resource API
-* `--k8s-import-path` - Kubernetes resource import path. Only valid if --k8s-api is set (default `k8s.io/api`)
+* `--k8s-api-import` - External Kubernetes resource import path of the form "host.com/repo/path[=import_identifier]". import_identifier is optional
 
 #### Example