VMware vSphere Integrated Containers provider (#206)

* Add Virtual Kubelet provider for VIC

Initial virtual kubelet provider for VMware VIC.  This provider currently
handles creating and starting of a pod VM via the VIC portlayer and persona
server.  Image store handling via the VIC persona server.  This provider
currently requires the feature/wolfpack branch of VIC.

* Added pod stop and delete.  Also added node capacity.

Added the ability to stop and delete pod VMs via VIC.  Also retrieve
node capacity information from the VCH.

* Cleanup and readme file

Some file clean up and added a Readme.md markdown file for the VIC
provider.

* Cleaned up errors, added function comments, moved operation code

1. Cleaned up error handling.  Set standard for creating errors.
2. Added method prototype comments for all interface functions.
3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder.

* Add mocking code and unit tests for podcache, podcreator, and podstarter

Used the unit test framework used in VIC to handle assertions in the provider's
unit test.  Mocking code generated using OSS project mockery, which is compatible
with the testify assertion framework.

* Vendored packages for the VIC provider

Requires feature/wolfpack branch of VIC and a few specific commit sha of
projects used within VIC.

* Implementation of POD Stopper and Deleter unit tests (#4)

* Updated files for initial PR

vendor/github.com/vmware/vic/lib/migration/plugins/plugin1/commonSpecForVCH.go

@@ -0,0 +1,128 @@
+// Copyright 2017 VMware, Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugin1
+
+import (
+	"context"
+	"fmt"
+
+	log "github.com/Sirupsen/logrus"
+
+	"github.com/vmware/vic/lib/migration/errors"
+	"github.com/vmware/vic/lib/migration/feature"
+	"github.com/vmware/vic/lib/migration/manager"
+	"github.com/vmware/vic/pkg/trace"
+	"github.com/vmware/vic/pkg/vsphere/extraconfig"
+	"github.com/vmware/vic/pkg/vsphere/session"
+)
+
+const (
+	target = manager.ApplianceConfigure
+)
+
+func init() {
+	defer trace.End(trace.Begin(fmt.Sprintf("Registering plugin %s:%d", target, feature.AddCommonSpecForVCHVersion)))
+	if err := manager.Migrator.Register(feature.AddCommonSpecForVCHVersion, target, &AddCommonSpecForVCH{}); err != nil {
+		log.Errorf("Failed to register plugin %s:%d, %s", target, feature.AddCommonSpecForVCHVersion, err)
+		panic(err)
+	}
+}
+
+// AddCommonSpecForVCH is plugin for vic 0.8.0-GA version upgrade
+type AddCommonSpecForVCH struct {
+}
+
+type VirtualContainerHostConfigSpec struct {
+	ExecutorConfig `vic:"0.1" scope:"read-only" key:"init"`
+}
+
+type ExecutorConfig struct {
+	Common `vic:"0.1" scope:"read-only" key:"common"`
+}
+
+type Common struct {
+	// A reference to the components hosting execution environment, if any
+	ExecutionEnvironment string
+
+	// Unambiguous ID with meaning in the context of its hosting execution environment
+	ID string `vic:"0.1" scope:"read-only" key:"id"`
+
+	// Convenience field to record a human readable name
+	Name string `vic:"0.1" scope:"read-only" key:"name"`
+
+	// Freeform notes related to the entity
+	Notes string `vic:"0.1" scope:"hidden" key:"notes"`
+}
+
+type UpdatedVCHConfigSpec struct {
+	UpdatedExecutorConfig `vic:"0.1" scope:"read-only" key:"init"`
+}
+
+type UpdatedExecutorConfig struct {
+	UpdatedCommon `vic:"0.1" scope:"read-only" key:"common"`
+}
+
+type UpdatedCommon struct {
+	// A reference to the components hosting execution environment, if any
+	ExecutionEnvironment string
+
+	// Unambiguous ID with meaning in the context of its hosting execution environment
+	ID string `vic:"0.1" scope:"read-only" key:"id"`
+
+	// Convenience field to record a human readable name
+	Name string `vic:"0.1" scope:"hidden" key:"name"`
+
+	// Freeform notes related to the entity
+	Notes string `vic:"0.1" scope:"hidden" key:"notes"`
+}
+
+func (p *AddCommonSpecForVCH) Migrate(ctx context.Context, s *session.Session, data interface{}) error {
+	defer trace.End(trace.Begin(fmt.Sprintf("AddCommonSpecForVCH version: %d", feature.AddCommonSpecForVCHVersion)))
+	if data == nil {
+		return nil
+	}
+	mapData, ok := data.(map[string]string)
+	if !ok {
+		// Log the error here and return nil so that other plugins can proceed
+		log.Errorf("Migration data format is not map: %+v", data)
+		return nil
+	}
+	oldStruct := &VirtualContainerHostConfigSpec{}
+	result := extraconfig.Decode(extraconfig.MapSource(mapData), oldStruct)
+	log.Debugf("The oldStruct is %+v", oldStruct)
+	if result == nil {
+		return &errors.DecodeError{Err: fmt.Errorf("decode oldStruct %+v failed", oldStruct)}
+	}
+
+	newStruct := &UpdatedVCHConfigSpec{
+		UpdatedExecutorConfig: UpdatedExecutorConfig{
+			UpdatedCommon: UpdatedCommon{
+				Name:                 oldStruct.Name,
+				ID:                   oldStruct.ID,
+				ExecutionEnvironment: oldStruct.ExecutionEnvironment,
+				Notes:                oldStruct.Notes,
+			},
+		},
+	}
+
+	cfg := make(map[string]string)
+	extraconfig.Encode(extraconfig.MapSink(cfg), newStruct)
+
+	for k, v := range cfg {
+		log.Debugf("New data: %s:%s", k, v)
+		mapData[k] = v
+	}
+	return nil
+}