Make the ironic-pxe_ipa-ipxe voting
Make the ironic-pxe_ipa-ipxe voting

The job have been stable for a while, we should make it voting now.

Change-Id: I45460090598952fbae1b92adbd11847b5cebc4ef

Tesora/tesora-project-config,openstack-infra/project-config,noorul/os-project-config,dongwenjuan/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,noorul/os-project-config,openstack-infra/project-config