add ignore_patterns to ansible.cfg
add ignore_patterns to ansible.cfg

To avoid warning message when artifacts is generated within
the inventory directory

kubernetes-sigs/kubespray,Atoms/kubespray,insequent/kargo,insequent/kargo,kubernetes-incubator/kargo,kubernetes-sigs/kubespray,kubernetes-incubator/kargo,Atoms/kubespray,kubernetes-sigs/kubespray,Atoms/kubespray,kubespray/kargo,kubespray/kargo,kubernetes-incubator/kubespray,kubernetes-sigs/kubespray,kubernetes-incubator/kubespray,Atoms/kubespray