Implement TopologyInfo and cpu_ids in podresources

It covers deviceplugin & cpumanager.

It has drawback, since cpuset and all other structs including cadvisor's keep
cpu as int, but for protobuf based interface is better to have fixed
int.
This patch also introduces additional interface CPUsProvider, while
DeviceProvider might have been extended too.

Checkpoint not covered by unit test.

Signed-off-by: Swati Sehgal <swsehgal@redhat.com>
Signed-off-by: Alexey Perevalov <alexey.perevalov@huawei.com>

pkg/kubelet/apis/podresources/server_v1alpha1_test.go

@@ -43,6 +43,11 @@ func (m *mockProvider) GetDevices(podUID, containerName string) []*podresourcesv
 	return args.Get(0).([]*podresourcesv1.ContainerDevices)
 }
 
+func (m *mockProvider) GetCPUs(podUID, containerName string) []int64 {
+	args := m.Called(podUID, containerName)
+	return args.Get(0).([]int64)
+}
+
 func (m *mockProvider) UpdateAllocatedDevices() {
 	m.Called()
 }