In [0] we followed the release-note about using threads=1 for the nova-api
service, but missed that the nova-metadata and placement service are
affected by the same issue.
[0] Iebf78d24c57a069eabced1bf35051cbae5014902
Conflicts:
attributes/default.rb
attributes/placement.rb
spec/placement_api_spec.rb
Bumped minor version for stable branch.
Change-Id: I9107ca1a135ac090dc9cf80b5192eed4838595df
(cherry picked from commit 4b796ce2fb)
436b3585a9