Glen Johnson, the former online politics editor of the Boston Globe who now serves as senior adviser to Secretary of State John Kerry, required a special waiver so he wouldn’t run afoul of ethics rules by communicating with reporters from his old newspaper and the New York Times. The State Department granted the wavier back in February, but the decision wasn’t added to a public list of such waivers maintained by the Office of Government Ethics until last week. Under ethics rules that aimed to close the revolving door between government and special interests, President Obama has barred political appointees…