[openstack] Add configuration note for all-in-one and DNS
[openstack] Add configuration note for all-in-one and DNS

When deploying an all-in-one with the Openstack playbooks without LBaaS, the DNS
wildcard record is not created by the playbooks because there are no dedicated
infrastructure nodes. Add a note to the configuration section that explains it.

rjhowe/openshift-ansible,miminar/openshift-ansible,akram/openshift-ansible,sdodson/openshift-ansible,maxamillion/openshift-ansible,bparees/openshift-ansible,openshift/openshift-ansible,akram/openshift-ansible,gburges/openshift-ansible,kwoodson/openshift-ansible,maxamillion/openshift-ansible,ewolinetz/openshift-ansible,rjhowe/openshift-ansible,bparees/openshift-ansible,nak3/openshift-ansible,miminar/openshift-ansible,sdodson/openshift-ansible,tagliateller/openshift-ansible,nak3/openshift-ansible,maxamillion/openshift-ansible,kwoodson/openshift-ansible,tagliateller/openshift-ansible,rjhowe/openshift-ansible,maxamillion/openshift-ansible,sdodson/openshift-ansible,tagliateller/openshift-ansible,miminar/openshift-ansible,tagliateller/openshift-ansible,ewolinetz/openshift-ansible,ewolinetz/openshift-ansible,gburges/openshift-ansible,ewolinetz/openshift-ansible,openshift/openshift-ansible,rhdedgar/openshift-ansible,mwoodson/openshift-ansible,miminar/openshift-ansible,rhdedgar/openshift-ansible,rjhowe/openshift-ansible,maxamillion/openshift-ansible,mwoodson/openshift-ansible,ewolinetz/openshift-ansible,rjhowe/openshift-ansible,sdodson/openshift-ansible,tagliateller/openshift-ansible,miminar/openshift-ansible,sdodson/openshift-ansible