fix(registry): ensure unit can be properly marshaled
fix(registry): ensure unit can be properly marshaled

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