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/govmomi/task/error.go

@@ -0,0 +1,32 @@
+/*
+Copyright (c) 2015 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 task
+
+import "github.com/vmware/govmomi/vim25/types"
+
+type Error struct {
+	*types.LocalizedMethodFault
+}
+
+// Error returns the task's localized fault message.
+func (e Error) Error() string {
+	return e.LocalizedMethodFault.LocalizedMessage
+}
+
+func (e Error) Fault() types.BaseMethodFault {
+	return e.LocalizedMethodFault.Fault
+}

vendor/github.com/vmware/govmomi/task/wait.go

@@ -0,0 +1,132 @@
+/*
+Copyright (c) 2015 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 task
+
+import (
+	"context"
+
+	"github.com/vmware/govmomi/property"
+	"github.com/vmware/govmomi/vim25/progress"
+	"github.com/vmware/govmomi/vim25/types"
+)
+
+type taskProgress struct {
+	info *types.TaskInfo
+}
+
+func (t taskProgress) Percentage() float32 {
+	return float32(t.info.Progress)
+}
+
+func (t taskProgress) Detail() string {
+	return ""
+}
+
+func (t taskProgress) Error() error {
+	if t.info.Error != nil {
+		return Error{t.info.Error}
+	}
+
+	return nil
+}
+
+type taskCallback struct {
+	ch   chan<- progress.Report
+	info *types.TaskInfo
+	err  error
+}
+
+func (t *taskCallback) fn(pc []types.PropertyChange) bool {
+	for _, c := range pc {
+		if c.Name != "info" {
+			continue
+		}
+
+		if c.Op != types.PropertyChangeOpAssign {
+			continue
+		}
+
+		if c.Val == nil {
+			continue
+		}
+
+		ti := c.Val.(types.TaskInfo)
+		t.info = &ti
+	}
+
+	// t.info could be nil if pc can't satify the rules above
+	if t.info == nil {
+		return false
+	}
+
+	pr := taskProgress{t.info}
+
+	// Store copy of error, so Wait() can return it as well.
+	t.err = pr.Error()
+
+	switch t.info.State {
+	case types.TaskInfoStateQueued, types.TaskInfoStateRunning:
+		if t.ch != nil {
+			// Don't care if this is dropped
+			select {
+			case t.ch <- pr:
+			default:
+			}
+		}
+		return false
+	case types.TaskInfoStateSuccess, types.TaskInfoStateError:
+		if t.ch != nil {
+			// Last one must always be delivered
+			t.ch <- pr
+		}
+		return true
+	default:
+		panic("unknown state: " + t.info.State)
+	}
+}
+
+// Wait waits for a task to finish with either success or failure. It does so
+// by waiting for the "info" property of task managed object to change. The
+// function returns when it finds the task in the "success" or "error" state.
+// In the former case, the return value is nil. In the latter case the return
+// value is an instance of this package's Error struct.
+//
+// Any error returned while waiting for property changes causes the function to
+// return immediately and propagate the error.
+//
+// If the progress.Sinker argument is specified, any progress updates for the
+// task are sent here. The completion percentage is passed through directly.
+// The detail for the progress update is set to an empty string. If the task
+// finishes in the error state, the error instance is passed through as well.
+// Note that this error is the same error that is returned by this function.
+//
+func Wait(ctx context.Context, ref types.ManagedObjectReference, pc *property.Collector, s progress.Sinker) (*types.TaskInfo, error) {
+	cb := &taskCallback{}
+
+	// Include progress sink if specified
+	if s != nil {
+		cb.ch = s.Sink()
+		defer close(cb.ch)
+	}
+
+	err := property.Wait(ctx, pc, ref, []string{"info"}, cb.fn)
+	if err != nil {
+		return nil, err
+	}
+
+	return cb.info, cb.err
+}

vendor/github.com/vmware/govmomi/task/wait_test.go

@@ -0,0 +1,41 @@
+/*
+Copyright (c) 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 task
+
+import (
+	"testing"
+
+	"github.com/vmware/govmomi/vim25/types"
+)
+
+func TestCallbackFn(t *testing.T) {
+	cb := &taskCallback{}
+
+	for _, o := range []types.PropertyChangeOp{types.PropertyChangeOpAdd, types.PropertyChangeOpRemove, types.PropertyChangeOpAssign, types.PropertyChangeOpIndirectRemove} {
+		for _, s := range []types.TaskInfoState{types.TaskInfoStateQueued, types.TaskInfoStateRunning, types.TaskInfoStateSuccess, types.TaskInfoStateError} {
+			c := types.PropertyChange{
+				Name: "info",
+				Op:   o,
+				Val: types.TaskInfo{
+					State: s,
+				},
+			}
+			t.Logf("Op: %s State: %s", o, s)
+			cb.fn([]types.PropertyChange{c})
+		}
+	}
+}