metadatasvc: changed sha1 to sha256
metadatasvc: changed sha1 to sha256

Although HMAC with sha1 is less affected by collisions than sha1 alone I personally think it's better to use sha256 since the beginning.
This has also the advantage of automatically increasing the key sizei, for the HMAC function, from 160 bits to 256, which consequently increases the HMAC strength.

jakon89/rkt,ybubnov/rkt,liugenping/rkt,il9ue/rkt,squeed/rkt,euank/rkt,tixxdz/rkt,Shashwatsh/rkt,akshaykarle/rkt,adfernandes/rkt,jonboulle/rkt,liubq919/rkt,Shashwatsh/rkt,klizhentas/rkt,kbrwn/rkt,wparad/rkt,tv42/rkt,tv42/rkt,iaguis/rkt,joshix/rkt,achanda/rkt,ChengTiesheng/rkt,jasonchaffee/rkt,gdi2290/rocket,clearlinux/rkt,Wilybald/rkt,smarvin/rkt,eyakubovich/rkt,adfernandes/rkt,coreos/rkt,sstabellini/rkt,fdserr/rkt,lee212/rkt,ramitsurana05/rkt,jjlakis/rkt,squeed/rkt,marineam/rkt,monstermunchkin/rkt,tmrts/rkt,maquanyi/rkt,chrisseto/rkt,lucasallan/rkt,matthaias/rkt,akshaykarle/rkt,lucasallan/rkt,eyakubovich/rkt,rot26/rkt,bsmr-go/rkt,rot26/rkt,ChengTiesheng/rkt,endocode/rkt,tmrts/rkt,yifan-gu/rocket,squaremo/rkt,krnowak/rkt,Wilybald/rkt,cab105/rkt,dalanlan/rkt,alban/rkt,dgonyeo/rkt,wparad/rkt,xnox/rkt,sgotti/rkt,MabinGo/rkt,kinvolk/rkt,iankronquist/rkt,mattthias/pkg-rkt,yifan-gu/rkt,joshix/rkt,maquanyi/rkt,akshaykarle/rkt,jjlakis/rkt,intfrr/rkt,liubq919/rkt,michelangelo13/rkt,cab105/rkt,linki/rkt,monstermunchkin/rkt,intfrr/rkt,xnox/rkt,intelsdi-x/rkt,MabinGo/rkt,lsm5/rkt,lee212/rkt,chrisseto/rkt,joshix/rkt,sstabellini/rkt,s-urbaniak/rkt,ybubnov/rkt,shobhit85/rkt,xnox/rkt,kbrwn/rkt,rkt/rkt,jzelinskie/rkt,ramitsurana05/rkt,intelsdi-x/rkt,lucasallan/rkt,jasonchaffee/rkt,luebken/rkt,yifan-gu/rkt,klizhentas/rkt,krnowak/rkt,Wilybald/rkt,intfrr/rkt,dgonyeo/rkt,bsmr-go/rkt,rhvgoyal/rkt,shtouff/rkt,linki/rkt,jonboulle/rkt,shobhit85/rkt,MattDees/rkt,robszumski/rocket,marineam/rkt,dalanlan/rkt,wparad/rkt,ramitsurana05/rkt,clearlinux/rkt,luebken/rkt,klizhentas/rkt,iankronquist/rkt,Yhgenomics/rkt,fdserr/rkt,kinvolk/rkt,MattDees/rkt,rkt/rkt,liugenping/rkt,blixtra/rkt,Shashwatsh/rkt,robszumski/rocket,eyakubovich/rkt,maquanyi/rkt,liugenping/rkt,sinfomicien/rkt,coreos/rkt,alexhersh/rkt,squaremo/rkt,crawford/rkt,kinvolk/rkt,rkt/rkt,jasonchaffee/rkt,Yhgenomics/rkt,tmrts/rkt,blixtra/rkt,s-urbaniak/rkt,lsm5/rkt,lee212/rkt,alban/rkt,squaremo/rkt,iankronquist/rkt,jonboulle/rkt,smarvin/rkt,bramvdbogaerde/rocket-arm,achanda/rkt,il9ue/rkt,shobhit85/rkt,rhvgoyal/rkt,michelangelo13/rkt,lsm5/rkt,iaguis/rkt,smarvin/rkt,nhlfr/rkt,jzelinskie/rkt,mjg59/rkt,euank/rkt,mattthias/pkg-rkt,jjlakis/rkt,yifan-gu/rocket,s-urbaniak/rkt,alexhersh/rkt,mattthias/pkg-rkt,nhlfr/rkt,euank/rkt,mike1729/rkt,michelangelo13/rkt,mike1729/rkt,endocode/rkt,ybubnov/rkt,fdserr/rkt,bsmr-go/rkt,MattDees/rkt,coreos/rkt,ramitsurana/rkt,achanda/rkt,ramitsurana/rkt,matthaias/rkt,rot26/rkt,sstabellini/rkt,markllama/rkt,mike1729/rkt,liubq919/rkt,bramvdbogaerde/rocket-arm,robszumski/rocket,dalanlan/rkt,kinvolk/rkt,sinfomicien/rkt,intelsdi-x/rkt,alban/rkt,markllama/rkt,iaguis/rkt,rkt/rkt,tixxdz/rkt,shtouff/rkt,adfernandes/rkt,tv42/rkt,lucasallan/rkt,MabinGo/rkt,jzelinskie/rkt,sgotti/rkt,jakon89/rkt,ramitsurana/rkt,sgotti/rkt,mjg59/rkt,sinfomicien/rkt,krnowak/rkt,yifan-gu/rocket,matthaias/rkt,marineam/rkt,shtouff/rkt,clearlinux/rkt,monstermunchkin/rkt,mjg59/rkt,gdi2290/rocket,luebken/rkt,joshix/rkt,yifan-gu/rkt,linki/rkt,crawford/rkt,il9ue/rkt,rhvgoyal/rkt,jakon89/rkt,cab105/rkt,tixxdz/rkt,blixtra/rkt,Wilybald/rkt,endocode/rkt,squeed/rkt,dgonyeo/rkt,chrisseto/rkt,alexhersh/rkt,markllama/rkt,Yhgenomics/rkt,kbrwn/rkt,crawford/rkt,nhlfr/rkt,ChengTiesheng/rkt