Fix path for /lib/modules on CentOS
Fix path for /lib/modules on CentOS

On CentOS /lib is a symlink to /usr/lib, therefore it needs to be
changed to point to  the real path. If not the container refuse to
start.

Change-Id: I790dfbd4b995adf250873bcde1785235adea0931

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