[cli-ref] Update python-watcherclient to 0.27.0
[cli-ref] Update python-watcherclient to 0.27.0

Regenerated with latest tools.

Change-Id: Icee7534279dfb04fa8c9ace78cf6adc77d62ac0b

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals