Support i18n for baremetal node cmds
Support i18n for baremetal node cmds

Wrap the help msg with _(), log warning msg
with _LW(), to support i18n translation.

Co-Authored-By: jiangwei <f36da4ba4f4f7bc1b534b81530a3ff04fb29e2b8@easystack.cn>
Partial-bug: #1627445
Change-Id: I219e56bcc24dcbf3220c69eed9267167ca70c829

openstack/python-ironicclient,openstack/python-ironicclient