[1.4.0] Update installation process and bump to API v16
Update GCP upgrade process * Don't remove files in cloud storage * Copy only application files Change-Id: I2d59f97acddefe35a2bb85a1bebae63d1ceca680
Update GCP upgrade process * Don't remove files in cloud storage * Copy only application files Change-Id: I2d59f97acddefe35a2bb85a1bebae63d1ceca680