amp-carousel integ test: wait for layout instead of build (#30933)
amp-carousel integ test: wait for layout instead of build (#30933)

* amp-carousel integ test: wait for layout instead of build

* remove todo
honeybadgerdontcare/amphtml,prateekbh/amphtml,lannka/amphtml,ampproject/amphtml,alanorozco/amphtml,nexxtv/amphtml,media-net/amphtml,smartadserver/amphtml,jridgewell/amphtml,nexxtv/amphtml,smartadserver/amphtml,mhc-gh/amphtml,alanorozco/amphtml,voyagegroup/amphtml,voyagegroup/amphtml,ampproject/amphtml,sharethrough/amphtml,Gregable/amphtml,smartadserver/amphtml,lannka/amphtml,voyagegroup/amphtml,jridgewell/amphtml,prateekbh/amphtml,ampproject/amphtml,mhc-gh/amphtml,rsimha-amp/amphtml,jpettitt/amphtml,jridgewell/amphtml,smartadserver/amphtml,jridgewell/amphtml,Gregable/amphtml,sharethrough/amphtml,honeybadgerdontcare/amphtml,danielrozenberg/amphtml,prateekbh/amphtml,jmadler/amphtml,mhc-gh/amphtml,sharethrough/amphtml,smartadserver/amphtml,sharethrough/amphtml,sharethrough/amphtml,rsimha-amp/amphtml,media-net/amphtml,lannka/amphtml,media-net/amphtml,alanorozco/amphtml,jmadler/amphtml,danielrozenberg/amphtml,zhouyx/amphtml,jmadler/amphtml,nexxtv/amphtml,nexxtv/amphtml,jpettitt/amphtml,ampproject/amphtml,media-net/amphtml,jridgewell/amphtml,Gregable/amphtml,rsimha-amp/amphtml,honeybadgerdontcare/amphtml,nexxtv/amphtml,danielrozenberg/amphtml,Gregable/amphtml,Gregable/amphtml,danielrozenberg/amphtml,zhouyx/amphtml,rsimha-amp/amphtml,voyagegroup/amphtml,prateekbh/amphtml,ampproject/amphtml,honeybadgerdontcare/amphtml,jpettitt/amphtml,smartadserver/amphtml,jpettitt/amphtml,zhouyx/amphtml,media-net/amphtml,jmadler/amphtml,voyagegroup/amphtml,honeybadgerdontcare/amphtml,ampproject/amphtml,media-net/amphtml,mhc-gh/amphtml,zhouyx/amphtml,mhc-gh/amphtml,rsimha-amp/amphtml,mhc-gh/amphtml,ampproject/amphtml,prateekbh/amphtml,lannka/amphtml,prateekbh/amphtml,jpettitt/amphtml,jridgewell/amphtml,alanorozco/amphtml,jpettitt/amphtml,jmadler/amphtml,honeybadgerdontcare/amphtml,sharethrough/amphtml,jpettitt/amphtml,Gregable/amphtml,jridgewell/amphtml,zhouyx/amphtml,alanorozco/amphtml,zhouyx/amphtml,mhc-gh/amphtml,jpettitt/amphtml,nexxtv/amphtml,lannka/amphtml,nexxtv/amphtml,Gregable/amphtml,rsimha-amp/amphtml,Gregable/amphtml,alanorozco/amphtml,rsimha-amp/amphtml,mhc-gh/amphtml,jmadler/amphtml,honeybadgerdontcare/amphtml,danielrozenberg/amphtml,danielrozenberg/amphtml,lannka/amphtml,prateekbh/amphtml,ampproject/amphtml,danielrozenberg/amphtml,lannka/amphtml,media-net/amphtml,voyagegroup/amphtml,media-net/amphtml,danielrozenberg/amphtml,voyagegroup/amphtml,alanorozco/amphtml,zhouyx/amphtml,alanorozco/amphtml