Install psmisc with haproxy
Install psmisc with haproxy

The haproxy check script that is installed with keepalived expects to use
'killall', however this package is not installed in the container templates
by default and therefore the haproxy role must install it in order for
keepalived to leave FAULT state.

Change-Id: I8048aaa16b163acfe3da6863aef26adbe18bd73e

major/openstack-ansible,os-cloud/os-ansible-deployment,BjoernT/openstack-ansible,major/openstack-ansible,bunchc/openstack-ansible,mancdaz/openstack-ansible,yanyao/newton,BjoernT/os-ansible-deployment,yanyao/newton,yanyao/openstack-ansible,mancdaz/openstack-ansible,BjoernT/openstack-ansible,bunchc/openstack-ansible,mrda/openstack-ansible,robb-romans/openstack-ansible,cfarquhar/openstack-ansible,cfarquhar/openstack-ansible,Logan2211/openstack-ansible,openstack/openstack-ansible,mrda/openstack-ansible,weezer/openstack-ansible,BjoernT/os-ansible-deployment,cloudnull/os-ansible-deployment,Logan2211/openstack-ansible,cloudnull/os-ansible-deployment,robb-romans/openstack-ansible,openstack/openstack-ansible,major/os-ansible-deployment,yanyao/openstack-ansible,mrda/openstack-ansible,stackforge/os-ansible-deployment,stackforge/os-ansible-deployment,BjoernT/os-ansible-deployment,weezer/openstack-ansible,os-cloud/os-ansible-deployment,major/os-ansible-deployment