build: update Makefile to allow multiple binaries
build: update Makefile to allow multiple binaries

marineam/ignition,jonboulle/ignition,higebu/ignition,mischief/ignition,crawford/ignition,coreos/ignition,ajeddeloh/ignition,dgonyeo/ignition,AlexNPavel/ignition,trnubo/ignition,coreos/ignition,crawford/ignition,ajeddeloh/ignition,mischief/ignition,higebu/ignition,AlexNPavel/ignition,marineam/ignition,dgonyeo/ignition,marineam/ignition,AlexNPavel/ignition,jonboulle/ignition,trnubo/ignition,jonboulle/ignition,ajeddeloh/ignition,coreos/ignition,dgonyeo/ignition,higebu/ignition,trnubo/ignition,mischief/ignition