(Reuters) – A Tesla Inc shareholder sued the electric car maker, Chief Executive Elon Musk and its board, accusing them of neglecting to tackle complaints about workplace discrimination and harassment, and engendering a “toxic workplace culture.” Thursday’s lawsuit is the latest against Tesla, which has been accused of racial discrimination and sexual harassment in its factories. “Tesla has created a toxic workplace culture grounded in racist and sexist abuse and discrimination against its own employees,” the investor, Solomon Chau, said. “This toxic work environment has gestated internally fo…