RGW deployment fails on 'set_fact _radosgw_address to radosgw_address_block ipv4' with:
The task includes an option with an undefined variable. The error was: 'item' is undefined
see logs in tripleo/ci 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.