So that we don't end up in a position where we find a DISABLE-ANSIBLE
file in place and wonder what it is or how it got there, ask the user
for a comment to place in the file. Append to the file in case it
already exists. Cat the file at the end to show the user all of the
comments in case there was one previously. Include the date for even
more clues.
Change-Id: I9c22f94c5ea93452b2975d4aae3bf7fbd9c736d0
ff7aa016b0