Fix transfer service dependencies:

- Fill OSVersion field of ocispec.Platform for windows OS in
transfer service plugin init()
- Do not return error from transfer service ReceiveStream if
stream.Recv() returned context.Canceled error

Signed-off-by: Kirtana Ashok <kiashok@microsoft.com>

platforms/platforms_windows.go

@@ -17,7 +17,10 @@
 package platforms
 
 import (
+	"fmt"
+
 	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	"golang.org/x/sys/windows"
 )
 
 // NewMatcher returns a Windows matcher that will match on osVersionPrefix if
@@ -32,3 +35,8 @@ func newDefaultMatcher(platform specs.Platform) Matcher {
 		},
 	}
 }
+
+func GetWindowsOsVersion() string {
+	major, minor, build := windows.RtlGetNtVersionNumbers()
+	return fmt.Sprintf("%d.%d.%d", major, minor, build)
+}