Add recognized HTTP headers
Add recognized HTTP headers

Add X-Robots-Tag and Content-Language as HTTP headers which should not have x-amz-meta prefix.
trademob/boto,weebygames/boto,abridgett/boto,campenberger/boto,nishigori/boto,ddzialak/boto,ryansb/boto,darjus-amzn/boto,garnaat/boto,appneta/boto,bryx-inc/boto,zzzirk/boto,nikhilraog/boto,yangchaogit/boto,awatts/boto,vijaylbais/boto,j-carl/boto,shaunbrady/boto,jotes/boto,drbild/boto,vishnugonela/boto,ramitsurana/boto,tpodowd/boto,ekalosak/boto,felix-d/boto,janslow/boto,disruptek/boto,weka-io/boto,alex/boto,khagler/boto,israelbenatar/boto,jindongh/boto,rayluo/boto,TiVoMaker/boto,nexusz99/boto,drbild/boto,alfredodeza/boto,stevenbrichards/boto,varunarya10/boto,rosmo/boto,elainexmas/boto,dimdung/boto,SaranyaKarthikeyan/boto,tpodowd/boto,shipci/boto,clouddocx/boto,disruptek/boto,podhmo/boto,appneta/boto,bleib1dj/boto,serviceagility/boto,zachmullen/boto,s0enke/boto,ocadotechnology/boto,alex/boto,pfhayes/boto,Asana/boto,revmischa/boto,lra/boto,acourtney2015/boto,Pretio/boto,kouk/boto,kouk/boto