cpuset: Fixup owners and add origin comment

* Note that this came from kubernetes repository
* Remove emeritus owners
* Add klueska, dchen1107, ffromani, klueska, SergeyKanzhelev to owners

Author: iancoolidge

cpuset/OWNERS

@@ -1,7 +1,8 @@
 # See the OWNERS docs at https://go.k8s.io/owners
 
 approvers:
+  - dchen1107
   - derekwaynecarr
-emeritus_approvers:
-  - ConnorDoyle
-  - vishh
+  - ffromani
+  - klueska
+  - SergeyKanzhelev

cpuset/cpuset.go

@@ -23,6 +23,8 @@ limitations under the License.
 // See http://man7.org/linux/man-pages/man7/cpuset.7.html#FORMATS for details.
 //
 // Future work can migrate this to use a 'set' library, and relax the dubious 'immutable' property.
+//
+// This package was originally developed in the 'kubernetes' repository.
 package cpuset
 
 import (