Replace greaterthan and equalto in openstack-stack
Replace greaterthan and equalto in openstack-stack

These two Jinja filters were added in 2.8 which is notably not packaged in
CentOS and RHEL. This removes them in favour of the `==` and `>` operators
which are available in Jinja 2.7.

cwilkers/openshift-ansible-contrib,pschiffe/openshift-ansible-contrib,openshift/openshift-ansible-contrib,Tlacenka/openshift-ansible-contrib,Tlacenka/openshift-ansible-contrib,dav1x/openshift-ansible-contrib,cwilkers/openshift-ansible-contrib,pschiffe/openshift-ansible-contrib,openshift/openshift-ansible-contrib,pschiffe/openshift-ansible-contrib,dav1x/openshift-ansible-contrib,glennswest/openshift-ansible-contrib,scollier/openshift-ansible-contrib,cwilkers/openshift-ansible-contrib,Tlacenka/openshift-ansible-contrib,cooktheryan/openshift-ansible-contrib,pschiffe/openshift-ansible-contrib,dav1x/openshift-ansible-contrib,scollier/openshift-ansible-contrib,Tlacenka/openshift-ansible-contrib,dav1x/openshift-ansible-contrib,scollier/openshift-ansible-contrib,openshift/openshift-ansible-contrib,openshift/openshift-ansible-contrib,cooktheryan/openshift-ansible-contrib,cooktheryan/openshift-ansible-contrib,cooktheryan/openshift-ansible-contrib,scollier/openshift-ansible-contrib,cwilkers/openshift-ansible-contrib