5b70c223ba3a6868ae4cc929d4620c28cadcf7ed

In e51c428fe5
the metadata was
introduced using the attribute "descr". We do not usually permit
abbreviations in APIs, and especially should not have accepted it
for an API plugins can use.
Mark descr as deprecated so current plugins can migrate. Use
description if available, and fall back to descr for older code.
Change-Id: I662482cd228f81bf1537062b9fe03b6c23354a78
Description
RETIRED, Gerrit as used by OpenStack