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`

pkg/component/component.go

@@ -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)
 	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