functional tests: fix noapp exec test
functional tests: fix noapp exec test

It wasn't using the right image :$

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