* Baghdadi's wife detained in **rthern Leba**n 9 days ago * Lebanese authorities conduct DNA test on his daughter * Kerry rules out using arrest to negotiate prisoners' release (Adds Kerry comment) By Laila Bassam and Sylvia Westall BEIRUT, Dec 2 (Reuters) - The Lebanese army detained a wife and daughter of Islamic State leader Abu Bakr al-Baghdadi as they crossed from Syria nine days ago, security officials said on Tuesday, in a move seen as likely to put pressure on the Islamist chief. ...