Description of problem:
While running playbook site.yml, task "get ceph status from the first monitor" failing saying 'cluster' is not defined

Version-Release number of selected component (if applicable):
ceph-ansible-3.2.0-0.1.beta3.el7cp.noarch

How reproducible:
Always

Steps to Reproduce:
1. Configure ceph-ansible to initialize a cluster and run playbook

Actual results:
fatal: [magna007]: FAILED! => {
    "msg": "The task includes an option with an undefined variable. The error was: 'cluster' is undefined\n\nThe error appears to have been in '/usr/share/ceph-ansible/site.yml': line 410, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n  tasks:\n    - name: get ceph status from the first monitor\n      ^ here\n"
}


Additional info:
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Observed that github.com/ceph/ceph-ansible/pull/3202 is intended to resolve this issue which has been merged to master branch.