shell/nib: change prefix add lifetimes to seconds
shell/nib: change prefix add lifetimes to seconds

x3ro/RIOT,kYc0o/RIOT,OTAkeys/RIOT,immesys/RiSyn,gebart/RIOT,A-Paul/RIOT,basilfx/RIOT,josephnoir/RIOT,BytesGalore/RIOT,authmillenon/RIOT,miri64/RIOT,immesys/RiSyn,toonst/RIOT,OTAkeys/RIOT,miri64/RIOT,josephnoir/RIOT,basilfx/RIOT,smlng/RIOT,miri64/RIOT,OTAkeys/RIOT,neiljay/RIOT,yogo1212/RIOT,gebart/RIOT,yogo1212/RIOT,cladmi/RIOT,kYc0o/RIOT,LudwigOrtmann/RIOT,kaspar030/RIOT,roberthartung/RIOT,BytesGalore/RIOT,rfuentess/RIOT,LudwigOrtmann/RIOT,RIOT-OS/RIOT,cladmi/RIOT,miri64/RIOT,aeneby/RIOT,kYc0o/RIOT,A-Paul/RIOT,authmillenon/RIOT,aeneby/RIOT,kbumsik/RIOT,biboc/RIOT,roberthartung/RIOT,gebart/RIOT,LudwigOrtmann/RIOT,LudwigKnuepfer/RIOT,BytesGalore/RIOT,rfuentess/RIOT,gebart/RIOT,miri64/RIOT,Josar/RIOT,OlegHahm/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,immesys/RiSyn,authmillenon/RIOT,kbumsik/RIOT,basilfx/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,x3ro/RIOT,mtausig/RIOT,kaspar030/RIOT,cladmi/RIOT,Josar/RIOT,yogo1212/RIOT,authmillenon/RIOT,yogo1212/RIOT,kaspar030/RIOT,jasonatran/RIOT,avmelnikoff/RIOT,roberthartung/RIOT,smlng/RIOT,ant9000/RIOT,BytesGalore/RIOT,LudwigOrtmann/RIOT,toonst/RIOT,LudwigKnuepfer/RIOT,josephnoir/RIOT,mtausig/RIOT,authmillenon/RIOT,mtausig/RIOT,mfrey/RIOT,mfrey/RIOT,immesys/RiSyn,Josar/RIOT,josephnoir/RIOT,mfrey/RIOT,rfuentess/RIOT,yogo1212/RIOT,biboc/RIOT,jasonatran/RIOT,LudwigKnuepfer/RIOT,josephnoir/RIOT,basilfx/RIOT,immesys/RiSyn,roberthartung/RIOT,gebart/RIOT,x3ro/RIOT,RIOT-OS/RIOT,smlng/RIOT,LudwigKnuepfer/RIOT,rfuentess/RIOT,avmelnikoff/RIOT,cladmi/RIOT,aeneby/RIOT,kYc0o/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,OTAkeys/RIOT,mtausig/RIOT,aeneby/RIOT,BytesGalore/RIOT,OlegHahm/RIOT,mfrey/RIOT,ant9000/RIOT,mtausig/RIOT,neiljay/RIOT,jasonatran/RIOT,x3ro/RIOT,yogo1212/RIOT,avmelnikoff/RIOT,A-Paul/RIOT,kaspar030/RIOT,biboc/RIOT,lazytech-org/RIOT,cladmi/RIOT,biboc/RIOT,authmillenon/RIOT,aeneby/RIOT,x3ro/RIOT,A-Paul/RIOT,smlng/RIOT,kYc0o/RIOT,basilfx/RIOT,LudwigKnuepfer/RIOT,A-Paul/RIOT,OlegHahm/RIOT,toonst/RIOT,jasonatran/RIOT,toonst/RIOT,mfrey/RIOT,toonst/RIOT,neiljay/RIOT,ant9000/RIOT,biboc/RIOT,Josar/RIOT,lazytech-org/RIOT,RIOT-OS/RIOT,neiljay/RIOT,neiljay/RIOT,lazytech-org/RIOT,RIOT-OS/RIOT,immesys/RiSyn,roberthartung/RIOT,lazytech-org/RIOT,LudwigOrtmann/RIOT,Josar/RIOT,kbumsik/RIOT,LudwigOrtmann/RIOT,OlegHahm/RIOT,rfuentess/RIOT,ant9000/RIOT,avmelnikoff/RIOT,smlng/RIOT,kbumsik/RIOT,jasonatran/RIOT,OlegHahm/RIOT,ant9000/RIOT