kubeadm: use separate context in GetConfigMapWithShortRetry

Intentionally pass a new context to this API call.
This will let the API call run independently of the parent
context timeout, which is quite short and can cause the API
call to return abruptly.

cmd/kubeadm/app/util/apiclient/idempotency_test.go

@@ -237,54 +237,3 @@ func TestMutateConfigMapWithConflict(t *testing.T) {
 		t.Fatalf("ConfigMap mutation with conflict was invalid, has: %q", cm.Data["key"])
 	}
 }
-
-func TestGetConfigMapWithShortRetry(t *testing.T) {
-	testcases := []struct {
-		name           string
-		reactorFunc    func(core.Action) (bool, runtime.Object, error)
-		errorCheckFunc func(*testing.T, error)
-	}{
-		{
-			name: "context deadline exceeded error is handled",
-			reactorFunc: func(core.Action) (bool, runtime.Object, error) {
-				return true, nil, context.DeadlineExceeded
-			},
-			errorCheckFunc: func(t *testing.T, err error) {
-				if err != nil {
-					t.Errorf("unexpected error: %v", err)
-				}
-			},
-		},
-		{
-			name: "would exceed context deadline error is handled",
-			reactorFunc: func(core.Action) (bool, runtime.Object, error) {
-				return true, nil, errors.New("Wait returned an error: rate: Wait(n=1) would exceed context deadline")
-			},
-			errorCheckFunc: func(t *testing.T, err error) {
-				if err != nil {
-					t.Errorf("unexpected error: %v", err)
-				}
-			},
-		},
-		{
-			name: "API error is not handled",
-			reactorFunc: func(core.Action) (bool, runtime.Object, error) {
-				return true, nil, apierrors.NewNotFound(schema.GroupResource{}, "")
-			},
-			errorCheckFunc: func(t *testing.T, err error) {
-				if !apierrors.IsNotFound(err) {
-					t.Errorf("expected error: IsNotFound, got: %v", err)
-				}
-			},
-		},
-	}
-
-	for _, tc := range testcases {
-		t.Run(tc.name, func(t *testing.T) {
-			client := fake.NewSimpleClientset()
-			client.PrependReactor("get", "configmaps", tc.reactorFunc)
-			_, err := GetConfigMapWithShortRetry(client, "foo", "bar")
-			tc.errorCheckFunc(t, err)
-		})
-	}
-}