Extend plugin's New with a context.Context

The new context.Context can be later used for passing a contextualized
logger. Or, other initialization steps that require the context.

pkg/framework/plugins/removepodsviolatinginterpodantiaffinity/pod_antiaffinity_test.go

@@ -240,6 +240,7 @@ func TestPodAntiAffinity(t *testing.T) {
 			}
 
 			plugin, err := New(
+				ctx,
 				&RemovePodsViolatingInterPodAntiAffinityArgs{},
 				handle,
 			)