The Veep has the “Housewives” on the move! Vice President Kamala Harris will be a guest on Sherri Shepherd’s daytime show, “Sherri,” on Wednesday, and sources tell Page Six that the appearance is forcing Bravo to move up the production time for its “Real Housewives of Potomac” reunion, which is shooting at the same studio. “Their schedule now has to be rearranged and pushed up to 4:30 in the morning. All of their food deliveries have to come before the street is totally blocked off by the Secret Service,” a source exclusively tells Page Six. Shepherd’s show films in Manhattan’s...