Donald Trump’s former national security adviser H.R. McMaster published a new book detailing the dysfunction he presided over in the White House, but panelists on MSNBC’s “Morning Joe” were astonished that he was unwilling to say whether his old boss deserved another term. The retired U.S. Army lieutenant general appeared Tuesday morning on the show, where fill-in host Jonathan Lemire pressed him to say whether the former president and current Republican nominee was fit for office, a determination that many of his other former officials have already stated for the record. “Do you really think …