Fix update_config.sh to consider the new app scenario
Fix update_config.sh to consider the new app scenario

If user enables a new app and calls update_config.sh,
updated_config.sh will concatenate new app config with .config

an4967/TizenRT,JeongJunSik/TizenRT,chanijjani/TizenRT,davidfather/TizenRT,junmin-kim/TizenRT,jeongchanKim/TizenRT,heejin-kim/TizenRT,jeongarmy/TizenRT,lokeshbv/TizenRT,shivgarg/TizenRT,davidfather/TizenRT,sunghan-chang/TizenRT,shivgarg/TizenRT,btheosam/TizenRT,jeongchanKim/TizenRT,an4967/TizenRT,heejin-kim/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,JeonginKim/TizenRT,pillip8282/TizenRT,btheosam/TizenRT,JeonginKim/TizenRT,JeonginKim/TizenRT,sunghan-chang/TizenRT,davidfather/TizenRT,heejin-kim/TizenRT,junmin-kim/TizenRT,JeonginKim/TizenRT,HONGCHAEHEE/TizenRT,pillip8282/TizenRT,shivgarg/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,lokeshbv/TizenRT,pillip8282/TizenRT,jsdosa/TizenRT,JeongJunSik/TizenRT,davidfather/TizenRT,sunghan-chang/TizenRT,junmin-kim/TizenRT,chanijjani/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,JeonginKim/TizenRT,sunghan-chang/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,HONGCHAEHEE/TizenRT,HONGCHAEHEE/TizenRT,junmin-kim/TizenRT,davidfather/TizenRT,heejin-kim/TizenRT,lokeshbv/TizenRT,btheosam/TizenRT,an4967/TizenRT,an4967/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,davidfather/TizenRT,jsdosa/TizenRT,chanijjani/TizenRT,chanijjani/TizenRT,jeongchanKim/TizenRT,davidfather/TizenRT,lokeshbv/TizenRT,shivgarg/TizenRT,HONGCHAEHEE/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,JeonginKim/TizenRT,junmin-kim/TizenRT,an4967/TizenRT,JeongJunSik/TizenRT,btheosam/TizenRT,JeongJunSik/TizenRT,chanijjani/TizenRT,JeongJunSik/TizenRT,jeongarmy/TizenRT,Samsung/TizenRT,chanijjani/TizenRT,heejin-kim/TizenRT,shivgarg/TizenRT,jeongarmy/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,lokeshbv/TizenRT,pillip8282/TizenRT,chanijjani/TizenRT,heejin-kim/TizenRT,btheosam/TizenRT,HONGCHAEHEE/TizenRT,jeongchanKim/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,HONGCHAEHEE/TizenRT,jeongchanKim/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,Samsung/TizenRT,an4967/TizenRT,an4967/TizenRT,shivgarg/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,btheosam/TizenRT,lokeshbv/TizenRT,sunghan-chang/TizenRT,JeongJunSik/TizenRT