Move copyfiles function to client-go

Resolves #443

This PR will remove dependency of oc binary for `copyfiles` function which copies file to component while `odo push`

cmd/push.go

@@ -79,7 +79,7 @@ var pushCmd = &cobra.Command{
 			if sourceType == "binary" {
 				asFile = true
 			}
-			err = component.PushLocal(client, componentName, applicationName, u.Path, asFile, os.Stdout)
+			err = component.PushLocal(client, componentName, applicationName, u.Path, asFile, os.Stdout, []string{})
 			checkError(err, fmt.Sprintf("failed to push component: %v", componentName))
 		case "git":
 			// currently we don't support changing build type

pkg/component/component.go

@@ -154,7 +154,7 @@ func GetCurrent(client *occlient.Client, applicationName string, projectName str
 
 // PushLocal push local code to the cluster and trigger build there.
 // asFile indicates if it is a binary component or not
-func PushLocal(client *occlient.Client, componentName string, applicationName string, path string, asFile bool, out io.Writer) error {
+func PushLocal(client *occlient.Client, componentName string, applicationName string, path string, asFile bool, out io.Writer, watchedFiles []string) error {
 	const targetPath = "/opt/app-root/src"
 
 	if !asFile {
@@ -175,17 +175,11 @@ func PushLocal(client *occlient.Client, componentName string, applicationName st
 	if err != nil {
 		return errors.Wrapf(err, "error while waiting for pod  %s", podSelector)
 	}
-	var syncOutput string
-	if !asFile {
-		syncOutput, err = client.RsyncPath(path, pod.Name, targetPath)
-	} else {
-		syncOutput, err = client.CopyFile(path, pod.Name, targetPath)
 
-	}
+	err = client.CopyFile(asFile, path, pod.Name, targetPath, watchedFiles)
 	if err != nil {
 		return errors.Wrap(err, "unable push files to pod")
 	}
-	fmt.Fprintf(out, syncOutput)
 	fmt.Fprintf(out, "Please wait, building component....\n")
 
 	// use pipes to write output from ExecCMDInContainer in yellow  to 'out' io.Writer

pkg/component/watch.go

@@ -170,7 +170,7 @@ func WatchAndPush(client *occlient.Client, componentName string, applicationName
 				fmt.Fprintf(out, "File %s changed\n", file)
 			}
 			fmt.Fprintf(out, "Pushing files...\n")
-			err := PushLocal(client, componentName, applicationName, path, asFile, out)
+			err := PushLocal(client, componentName, applicationName, path, asFile, out, changedFiles)
 			if err != nil {
 				// Intentionally not exiting on error here.
 				// We don't want to break watch when push failed, it might be fixed with the next change.