While the filmmakers behind Showtime’s two-part “The Comey Rule” have clearly overestimated the public’s desire for— uhhh, gestures in the general direction of anything and everything in entertainment vaguely resembling the Trump Shitshow, any ancillary offshoots (see the Fox News portrait “The Loudest Voice”) and generally, politics in the corrosive age of toxic politics— writer/director Bill Ray’s “The Comey Rule” does open up with a good, if simplistic, bit and intriguing question. Featuring footage from The Late Show with Stephen Colbert, the basic, easy to digest posit for audiences is thus: is James Comey a “good” guy or a “bad” guy?