Adding new Compute Node to RDO Liberty Cluster && Getting EXCLUDE_SERVERS to work

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This post briefly describes how to rebuild  currently used openstack-packstack packages on CentOS 7.2 (RDO Liberty) and put in work patch proposed by bugzilla record  Bug 1254389 – Can no longer run packstack to maintain cluster  right away, i.e. avoiding  waiting official procedure of pushing new openstack-packstack packages to stable repos.

Complete text may bee viewed  here