The Houston Grand Opera announced its 2017-18 season Thursday with opening night featuring Verdi’s “La Traviata.” In sum, there will be seven operas overall between October 20, 2017 and May 11, including one World Premiere. The 2017 Operas “La Traviata” opens the season for seven performances with Albina Shagimuratova. This will be the soprano’s fourth run of the work in {…}