* update sdk version to v3.8.1-rc.17 * upgrade sdk version to v3.8.1-rc.19. * upgrade sdk version to v3.8.1-rc.21. * update interface name.
* update sdk version to v3.8.1-rc.17 * upgrade sdk version to v3.8.1-rc.19. * upgrade sdk version to v3.8.1-rc.21. * update interface name.