Do not remove `meta` tags with `amp4ads-` prefix (#8302)
Do not remove `meta` tags with `amp4ads-` prefix (#8302)

This is for issue #7730.
ampproject/amphtml,yieldmo/amphtml,jridgewell/amphtml,sebastianbenz/amphtml,wjfang/amphtml,mhc-gh/amphtml,sharethrough/amphtml,cvializ/amphtml,laterpay/amphtml,taboola/amphtml,danielrozenberg/amphtml,luciancrasovan/amphtml,engtat/amphtml,media-net/amphtml,voyagegroup/amphtml,luciancrasovan/amphtml,Mobusi-ads/amphtml,donttrustthisbot/amphtml,kmh287/amphtml,gumgum/amphtml,DAC-f1h-dev/amphtml,donttrustthisbot/amphtml,rajkumarsrk/amphtml,zhangsu/amphtml,sklobovskaya/amphtml,nexxtv/amphtml,gumgum/amphtml,DarXector/amphtml,jdelhommeau/amphtml,kmh287/amphtml,jmadler/amphtml,engtat/amphtml,tlong2/amphtml,yieldbot/amphtml,widespace-os/amphtml,sklobovskaya/amphtml,sriramkrish85/amphtml,ecoron/amphtml,JuliusThms/amphtml,smartadserver/amphtml,vmarteev/amphtml,Gregable/amphtml,wjfang/amphtml,DarXector/amphtml,media-net/amphtml,shawnbuso/amphtml,media-net/amphtml,DAC-f1h-dev/amphtml,dotandads/amphtml,JuliusThms/amphtml,kmh287/amphtml,lannka/amphtml,JuliusThms/amphtml,jridgewell/amphtml,dotandads/amphtml,sklobovskaya/amphtml,comScore/amphtml,yieldmo/amphtml,tlong2/amphtml,cory-work/amphtml,taboola/amphtml,arealit/amphtml,rsimha-amp/amphtml,jpettitt/amphtml,jpettitt/amphtml,Mobusi-ads/amphtml,BenDz/amphtml,src-code/amphtml,rajkumarsrk/amphtml,koshka/amphtml,camelburrito/amphtml,luciancrasovan/amphtml,powdercloud/amphtml,adup-tech/amphtml,Mobusi-ads/amphtml,sriramkrish85/amphtml,voyagegroup/amphtml,arealit/amphtml,JuliusThms/amphtml,powdercloud/amphtml,jridgewell/amphtml,lannka/amphtml,vmarteev/amphtml,sriramkrish85/amphtml,jdelhommeau/amphtml,arealit/amphtml,ampproject/amphtml,Gregable/amphtml,ampproject/amphtml,taboola/amphtml,yandex-pcode/amphtml,koshka/amphtml,luciancrasovan/amphtml,yieldbot/amphtml,gumgum/amphtml,jpettitt/amphtml,bpaduch/amphtml,rajkumarsrk/amphtml,zhouyx/amphtml,fullspeed-sp/amphtml,laterpay/amphtml,erwinmombay/amphtml,sharethrough/amphtml,clawr/amphtml,rsimha-amp/amphtml,pedjoni8/amphtml,jridgewell/amphtml,Mobusi-ads/amphtml,yieldmo/amphtml,rajkumarsrk/amphtml,zhucl/amphtml,zhucl/amphtml,ampproject/amphtml,danielrozenberg/amphtml,adiant/amphtml,honeybadgerdontcare/amphtml,yieldbot/amphtml,spotxchange/amphtml,BenDz/amphtml,ampproject/amphtml,voyagegroup/amphtml,jmadler/amphtml,chaveznvg/amphtml,erwinmombay/amphtml,vmarteev/amphtml,zhangsu/amphtml,keithwrightbos/amphtml,jdelhommeau/amphtml,aghassemi/amphtml,avimehta/amphtml,dotandads/amphtml,fullspeed-sp/amphtml,Gregable/amphtml,media-net/amphtml,spotxchange/amphtml,rsimha-amp/amphtml,sebastianbenz/amphtml,keithwrightbos/amphtml,zhouyx/amphtml,dotandads/amphtml,lannka/amphtml,pedjoni8/amphtml,spotxchange/amphtml,yieldmo/amphtml,alanorozco/amphtml,ampproject/amphtml,comScore/amphtml,adiant/amphtml,tlong2/amphtml,danielrozenberg/amphtml,laterpay/amphtml,ecoron/amphtml,zhucl/amphtml,DarXector/amphtml,yieldmo/amphtml,donttrustthisbot/amphtml,aghassemi/amphtml,yieldbot/amphtml,camelburrito/amphtml,chaveznvg/amphtml,luciancrasovan/amphtml,widespace-os/amphtml,kamtschatka/amphtml,dotandads/amphtml,sriramkrish85/amphtml,jdelhommeau/amphtml,src-code/amphtml,honeybadgerdontcare/amphtml,wjfang/amphtml,clawr/amphtml,taboola/amphtml,bpaduch/amphtml,engtat/amphtml,kixer-com/amphtml,camelburrito/amphtml,jmadler/amphtml,powdercloud/amphtml,rajkumarsrk/amphtml,cory-work/amphtml,danielrozenberg/amphtml,comScore/amphtml,avimehta/amphtml,gumgum/amphtml,donttrustthisbot/amphtml,voyagegroup/amphtml,jdelhommeau/amphtml,taboola/amphtml,danielrozenberg/amphtml,lzanol/amphtml,cvializ/amphtml,kamtschatka/amphtml,shawnbuso/amphtml,wjfang/amphtml,camelburrito/amphtml,mhc-gh/amphtml,kmh287/amphtml,alanorozco/amphtml,adup-tech/amphtml,nexxtv/amphtml,jmadler/amphtml,erwinmombay/amphtml,comScore/amphtml,jmadler/amphtml,burtcorp/amphtml,Gregable/amphtml,aghassemi/amphtml,jpettitt/amphtml,DAC-f1h-dev/amphtml,comScore/amphtml,zhucl/amphtml,smartadserver/amphtml,danielrozenberg/amphtml,prateekbh/amphtml,JuliusThms/amphtml,powdercloud/amphtml,rsimha-amp/amphtml,erwinmombay/amphtml,koshka/amphtml,cvializ/amphtml,donttrustthisbot/amphtml,yandex-pcode/amphtml,rajkumarsrk/amphtml,danielrozenberg/amphtml,vmarteev/amphtml,avimehta/amphtml,burtcorp/amphtml,honeybadgerdontcare/amphtml,widespace-os/amphtml,engtat/amphtml,BenDz/amphtml,spotxchange/amphtml,jridgewell/amphtml,kixer-com/amphtml,src-code/amphtml,zhucl/amphtml,kixer-com/amphtml,cory-work/amphtml,bpaduch/amphtml,sharethrough/amphtml,clawr/amphtml,Gregable/amphtml,chaveznvg/amphtml,media-net/amphtml,mhc-gh/amphtml,kixer-com/amphtml,arealit/amphtml,sklobovskaya/amphtml,jpettitt/amphtml,comScore/amphtml,fullspeed-sp/amphtml,sharethrough/amphtml,DAC-f1h-dev/amphtml,BenDz/amphtml,mhc-gh/amphtml,yieldbot/amphtml,ADITION/amphtml,vmarteev/amphtml,pedjoni8/amphtml,adiant/amphtml,cvializ/amphtml,Mobusi-ads/amphtml,yieldmo/amphtml,chaveznvg/amphtml,laterpay/amphtml,burtcorp/amphtml,widespace-os/amphtml,jmadler/amphtml,koshka/amphtml,wjfang/amphtml,avimehta/amphtml,mhc-gh/amphtml,nexxtv/amphtml,sklobovskaya/amphtml,sklobovskaya/amphtml,smartadserver/amphtml,erwinmombay/amphtml,rsimha-amp/amphtml,zhangsu/amphtml,rajkumarsrk/amphtml,sharethrough/amphtml,lannka/amphtml,voyagegroup/amphtml,src-code/amphtml,donttrustthisbot/amphtml,lannka/amphtml,luciancrasovan/amphtml,gumgum/amphtml,JuliusThms/amphtml,prateekbh/amphtml,prateekbh/amphtml,clawr/amphtml,clawr/amphtml,lzanol/amphtml,techhtml/amphtml,spotxchange/amphtml,zhucl/amphtml,jridgewell/amphtml,avimehta/amphtml,tlong2/amphtml,adiant/amphtml,aghassemi/amphtml,jpettitt/amphtml,Gregable/amphtml,zhucl/amphtml,koshka/amphtml,alanorozco/amphtml,shawnbuso/amphtml,laterpay/amphtml,avimehta/amphtml,lannka/amphtml,bpaduch/amphtml,sebastianbenz/amphtml,jpettitt/amphtml,arealit/amphtml,widespace-os/amphtml,cvializ/amphtml,clawr/amphtml,adup-tech/amphtml,keithwrightbos/amphtml,clawr/amphtml,powdercloud/amphtml,lzanol/amphtml,comScore/amphtml,lzanol/amphtml,vmarteev/amphtml,chaveznvg/amphtml,adiant/amphtml,keithwrightbos/amphtml,ADITION/amphtml,src-code/amphtml,nexxtv/amphtml,jdelhommeau/amphtml,fullspeed-sp/amphtml,media-net/amphtml,nexxtv/amphtml,aghassemi/amphtml,taboola/amphtml,adup-tech/amphtml,burtcorp/amphtml,cory-work/amphtml,engtat/amphtml,ADITION/amphtml,src-code/amphtml,sriramkrish85/amphtml,bpaduch/amphtml,honeybadgerdontcare/amphtml,prateekbh/amphtml,DarXector/amphtml,yieldmo/amphtml,honeybadgerdontcare/amphtml,keithwrightbos/amphtml,lannka/amphtml,smartadserver/amphtml,voyagegroup/amphtml,wjfang/amphtml,kixer-com/amphtml,aghassemi/amphtml,pedjoni8/amphtml,zhouyx/amphtml,prateekbh/amphtml,ecoron/amphtml,chaveznvg/amphtml,yandex-pcode/amphtml,techhtml/amphtml,jpettitt/amphtml,zhouyx/amphtml,arealit/amphtml,ampproject/amphtml,zhouyx/amphtml,engtat/amphtml,nexxtv/amphtml,kamtschatka/amphtml,media-net/amphtml,prateekbh/amphtml,kamtschatka/amphtml,ecoron/amphtml,DAC-f1h-dev/amphtml,danielrozenberg/amphtml,prateekbh/amphtml,kamtschatka/amphtml,mhc-gh/amphtml,cory-work/amphtml,smartadserver/amphtml,shawnbuso/amphtml,spotxchange/amphtml,jridgewell/amphtml,honeybadgerdontcare/amphtml,adiant/amphtml,cory-work/amphtml,sklobovskaya/amphtml,tlong2/amphtml,DAC-f1h-dev/amphtml,rsimha-amp/amphtml,yieldbot/amphtml,yandex-pcode/amphtml,pedjoni8/amphtml,ADITION/amphtml,kixer-com/amphtml,DarXector/amphtml,zhangsu/amphtml,adiant/amphtml,voyagegroup/amphtml,lzanol/amphtml,burtcorp/amphtml,techhtml/amphtml,sriramkrish85/amphtml,shawnbuso/amphtml,tlong2/amphtml,yandex-pcode/amphtml,engtat/amphtml,alanorozco/amphtml,bpaduch/amphtml,ampproject/amphtml,rsimha-amp/amphtml,Mobusi-ads/amphtml,powdercloud/amphtml,zhangsu/amphtml,honeybadgerdontcare/amphtml,fullspeed-sp/amphtml,sebastianbenz/amphtml,alanorozco/amphtml,techhtml/amphtml,kamtschatka/amphtml,mhc-gh/amphtml,BenDz/amphtml,Gregable/amphtml,dotandads/amphtml,Gregable/amphtml,widespace-os/amphtml,gumgum/amphtml,vmarteev/amphtml,keithwrightbos/amphtml,ecoron/amphtml,alanorozco/amphtml,pedjoni8/amphtml,laterpay/amphtml,burtcorp/amphtml,zhouyx/amphtml,ADITION/amphtml,zhouyx/amphtml,yandex-pcode/amphtml,mhc-gh/amphtml,alanorozco/amphtml,kmh287/amphtml,adup-tech/amphtml,cory-work/amphtml,zhangsu/amphtml,camelburrito/amphtml,erwinmombay/amphtml,powdercloud/amphtml,adup-tech/amphtml,smartadserver/amphtml,DarXector/amphtml,wjfang/amphtml,cvializ/amphtml,media-net/amphtml,taboola/amphtml,nexxtv/amphtml,alanorozco/amphtml,luciancrasovan/amphtml,yandex-pcode/amphtml,BenDz/amphtml,sharethrough/amphtml,kmh287/amphtml,fullspeed-sp/amphtml,sebastianbenz/amphtml,bpaduch/amphtml,lzanol/amphtml,keithwrightbos/amphtml,shawnbuso/amphtml,gumgum/amphtml,sebastianbenz/amphtml,ecoron/amphtml,donttrustthisbot/amphtml,camelburrito/amphtml,kixer-com/amphtml,arealit/amphtml,shawnbuso/amphtml,techhtml/amphtml,camelburrito/amphtml,techhtml/amphtml,koshka/amphtml