mantle/platform/aliyun: modify the API to use HTTPS by default

Attempting to override the http scheme for each request is not working
for every request type. Let's set the client config scheme to HTTPS by default.
Move away from `NewClientWithAccessKey` and instead create an access key
separately and then use `NewClientWithOptions` to create the client with a
custom config using "HTTPS" for the scheme.
Also remove the scheme override for each request.

mantle/platform/api/aliyun/api.go

@@ -26,6 +26,8 @@ import (
 	"github.com/coreos/pkg/capnslog"
 	"github.com/coreos/pkg/multierror"
 
+	"github.com/aliyun/alibaba-cloud-sdk-go/sdk"
+	"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials"
 	"github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
 	"github.com/aliyun/alibaba-cloud-sdk-go/services/ecs"
 	"github.com/aliyun/aliyun-oss-go-sdk/oss"
@@ -88,7 +90,10 @@ func New(opts *Options) (*API, error) {
 		opts.Region = profile.Region
 	}
 
-	ecs, err := ecs.NewClientWithAccessKey(opts.Region, opts.AccessKeyID, opts.SecretKey)
+	config := sdk.NewConfig()
+	config.Scheme = "HTTPS"
+	credential := credentials.NewAccessKeyCredential(opts.AccessKeyID, opts.SecretKey)
+	ecs, err := ecs.NewClientWithOptions(opts.Region, config, credential)
 	if err != nil {
 		return nil, err
 	}
@@ -207,7 +212,6 @@ func (a *API) ImportImage(format, bucket, object, image_size, device, name, desc
 	request := ecs.CreateImportImageRequest()
 	request.SetConnectTimeout(defaultConnectTimeout)
 	request.SetReadTimeout(defaultReadTimeout)
-	request.Scheme = "https"
 	request.DiskDeviceMapping = &[]ecs.ImportImageDiskDeviceMapping{
 		{
 			Format:        format,
@@ -297,7 +301,6 @@ func (a *API) GetImages(name string) (*ecs.DescribeImagesResponse, error) {
 	request := ecs.CreateDescribeImagesRequest()
 	request.SetConnectTimeout(defaultConnectTimeout)
 	request.SetReadTimeout(defaultReadTimeout)
-	request.Scheme = "https"
 	request.ImageName = name
 	return a.ecs.DescribeImages(request)
 }
@@ -307,7 +310,6 @@ func (a *API) GetImagesByID(id string, region string) (*ecs.DescribeImagesRespon
 	request := ecs.CreateDescribeImagesRequest()
 	request.SetConnectTimeout(defaultConnectTimeout)
 	request.SetReadTimeout(defaultReadTimeout)
-	request.Scheme = "https"
 	request.ImageId = id
 	request.RegionId = region
 	return a.ecs.DescribeImages(request)
@@ -318,7 +320,6 @@ func (a *API) DeleteImage(id string, force bool) error {
 	request := ecs.CreateDeleteImageRequest()
 	request.SetConnectTimeout(defaultConnectTimeout)
 	request.SetReadTimeout(defaultReadTimeout)
-	request.Scheme = "https"
 	request.ImageId = id
 	request.Force = requests.NewBoolean(force)
 
@@ -350,7 +351,6 @@ func (a *API) DeleteSnapshot(id string, force bool) error {
 	request := ecs.CreateDeleteSnapshotRequest()
 	request.SetConnectTimeout(defaultConnectTimeout)
 	request.SetReadTimeout(defaultReadTimeout)
-	request.Scheme = "https"
 	request.SnapshotId = id
 	request.Force = requests.NewBoolean(force)
 	_, err := a.ecs.DeleteSnapshot(request)
@@ -430,7 +430,6 @@ func (a *API) ListRegions() ([]string, error) {
 	request := ecs.CreateDescribeRegionsRequest()
 	request.SetConnectTimeout(defaultConnectTimeout)
 	request.SetReadTimeout(defaultReadTimeout)
-	request.Scheme = "https"
 
 	response, err := a.ecs.DescribeRegions(request)
 	if err != nil {
@@ -468,7 +467,6 @@ func (a *API) ChangeVisibility(region string, id string, public bool) error {
 			request := ecs.CreateModifyImageSharePermissionRequest()
 			request.SetConnectTimeout(defaultConnectTimeout)
 			request.SetReadTimeout(defaultReadTimeout)
-			request.Scheme = "https"
 			request.ImageId = id
 			request.RegionId = region
 			request.IsPublic = requests.NewBoolean(public)