Port nni removed#514

YufengXin wants to merge 13 commits intomainatlanticwave-sdx/sdx-controller:mainfrom

478-link-status-not-updating-to-error-after-nni-attribute-removal-use-case-9atlanticwave-sdx/sdx-controller:478-link-status-not-updating-to-error-after-nni-attribute-removal-use-case-9Copy head branch name to clipboard