@tkolhar please note that katello ignored groups are following: 

def TESTNG_KATELLO_EXCLUDE_GROUPS = "openldap,sam-upgrade,cfse-ignore,foreman"
(take a look at: ./build.gradle)

So you may want to use: cfse-ignore (instead of: headpin-cli)

headpin-cli just indicates the testto be run for headpin, it DOES'NT restrict katello to run it.

please change and push (one more time) please. tyia.