Verified with 4.4.0-0.nightly-2020-03-09-234759
GCP cluster with cluster name yy.cn installation pass. From QE perspective, '.' is supported in cluster name hence moving it to verified state.
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.