Add posix_ipc to requirements
Add posix_ipc to requirements

Change-Id: Ia564f7d7653c1abcb732b8261ee9ec99323d0f43
Closes-Bug: 1354078

froyobin/ironic,dims/ironic,SauloAislan/ironic,naterh/ironic,bacaldwell/ironic,naototty/vagrant-lxc-ironic,naototty/vagrant-lxc-ironic,NaohiroTamura/ironic,SauloAislan/ironic,devananda/ironic,faizan-barmawer/openstack_ironic,debayanray/ironic_backup,redhat-openstack/ironic,bacaldwell/ironic,ionutbalutoiu/ironic,Tehsmash/ironic,Tan0/ironic,hpproliant/ironic,dims/ironic,pshchelo/ironic,ramineni/myironic,ionutbalutoiu/ironic,openstack/ironic,pshchelo/ironic,rdo-management/ironic,openstack/ironic,rackerlabs/ironic,supermari0/ironic,NaohiroTamura/ironic