refactor(sign): Simplify logging in sign pkg
refactor(sign): Simplify logging in sign pkg

dalbani/fleet,esatterwhite/fleet,bviswana101/fleet,coreos/fleet,flandr/fleet,mwitkow/fleet,improbable-io/fleet,octoblu/fleet,mookjp/fleet,dongsupark/fleet,dalbani/fleet,jonboulle/fleet,endocode/fleet,thepwagner/fleet,hhoover/fleet,bcwaldon/fleet,improbable-io/fleet,esatterwhite/fleet,WPMedia/fleet,flandr/fleet,giantswarm/fleet,endocode/fleet,mischief/fleet,dongsupark/fleet,mookjp/fleet,mwhooker/fleet,giantswarm/fleet,webwlsong/fleet,mwhooker/fleet,jonboulle/fleet,coreos/fleet,WPMedia/fleet,bviswana101/fleet,thepwagner/fleet,jonboulle/fleet,coreos/fleet,wuqixuan/fleet,ecnahc515/fleet,wuqixuan/fleet,dongsupark/fleet,octoblu/fleet,paveltiunov/fleet,dalbani/fleet,ecnahc515/fleet,ecnahc515/fleet,endocode/fleet,giantswarm/fleet,improbable-io/fleet,bcwaldon/fleet,mwitkow-io/fleet,paveltiunov/fleet,mwitkow-io/fleet,webwlsong/fleet,hhoover/fleet,mischief/fleet,bcwaldon/fleet,mwitkow/fleet