Workflow documentation is now in infra-manual

Replace URLs for workflow documentation to appropriate parts of the
OpenStack Project Infrastructure Manual.

Change-Id: I77aa4152a903a0f1f47de20bb1a006d29f5a1bf2
Update i18n translation for NEC plugin log msg's

All the log messages now have the required hints. In addition to
this debug messages are not translated. This is done for the
plugins/nec directory.

Change-Id: Ic0a352cd61131637c471931e3e73995e2143675f
Merge "Workflow documentation is now in infra-manual"
Merge "Update i18n translation for NEC plugin log msg's"