*: update MAINTAINERS
*: update MAINTAINERS

Alban, Iago and Krzesimir are no longer with Endocode.
Added Yifan and Stefan.

coreos/rkt,akshaykarle/rkt,endocode/rkt,rkt/rkt,Yhgenomics/rkt,kbrwn/rkt,jjlakis/rkt,iaguis/rkt,Wilybald/rkt,jakon89/rkt,shobhit85/rkt,endocode/rkt,jakon89/rkt,kinvolk/rkt,sstabellini/rkt,Yhgenomics/rkt,smarvin/rkt,kinvolk/rkt,Wilybald/rkt,dgonyeo/rkt,yifan-gu/rkt,alban/rkt,smarvin/rkt,joshix/rkt,euank/rkt,iaguis/rkt,krnowak/rkt,markllama/rkt,ybubnov/rkt,liugenping/rkt,nhlfr/rkt,linki/rkt,smarvin/rkt,linki/rkt,kinvolk/rkt,jasonchaffee/rkt,liugenping/rkt,Yhgenomics/rkt,jonboulle/rkt,mike1729/rkt,akshaykarle/rkt,monstermunchkin/rkt,krnowak/rkt,liugenping/rkt,jasonchaffee/rkt,tmrts/rkt,markllama/rkt,sstabellini/rkt,alban/rkt,il9ue/rkt,jzelinskie/rkt,kbrwn/rkt,intelsdi-x/rkt,shobhit85/rkt,adfernandes/rkt,lee212/rkt,joshix/rkt,liubq919/rkt,jzelinskie/rkt,matthaias/rkt,tmrts/rkt,lucasallan/rkt,rkt/rkt,s-urbaniak/rkt,yifan-gu/rocket,jzelinskie/rkt,sinfomicien/rkt,sgotti/rkt,euank/rkt,kbrwn/rkt,alban/rkt,yifan-gu/rocket,monstermunchkin/rkt,sgotti/rkt,yifan-gu/rkt,Wilybald/rkt,squeed/rkt,sgotti/rkt,liubq919/rkt,kinvolk/rkt,monstermunchkin/rkt,linki/rkt,shobhit85/rkt,joshix/rkt,tmrts/rkt,yifan-gu/rkt,lucasallan/rkt,lucasallan/rkt,markllama/rkt,krnowak/rkt,achanda/rkt,jakon89/rkt,adfernandes/rkt,yifan-gu/rocket,intelsdi-x/rkt,coreos/rkt,cab105/rkt,akshaykarle/rkt,mike1729/rkt,lee212/rkt,nhlfr/rkt,joshix/rkt,dgonyeo/rkt,ybubnov/rkt,mike1729/rkt,blixtra/rkt,jonboulle/rkt,cab105/rkt,squeed/rkt,Shashwatsh/rkt,liubq919/rkt,jjlakis/rkt,sinfomicien/rkt,Shashwatsh/rkt,coreos/rkt,iaguis/rkt,ybubnov/rkt,rkt/rkt,adfernandes/rkt,blixtra/rkt,lucasallan/rkt,jasonchaffee/rkt,rkt/rkt,il9ue/rkt,cab105/rkt,blixtra/rkt,nhlfr/rkt,matthaias/rkt,il9ue/rkt,euank/rkt,matthaias/rkt,Shashwatsh/rkt,endocode/rkt,lee212/rkt,s-urbaniak/rkt,intelsdi-x/rkt,sinfomicien/rkt,jjlakis/rkt,sstabellini/rkt,achanda/rkt,jonboulle/rkt,squeed/rkt,Wilybald/rkt,dgonyeo/rkt,achanda/rkt,s-urbaniak/rkt