re-enable dot position cop, but configured for end-of-line
re-enable dot position cop, but configured for end-of-line

beginning of line can be dangerous when you copy/paste into irb,
because it's not greedy, so will execute whatever looks like
the first complete statement. this may be an AR query that hasn't
been very restricted yet, accidentally destroying the database

Change-Id: I878e9e364b84ae57d79ea3185d3bddf3e6d56d8a
Reviewed-on: https://gerrit.instructure.com/133054
Tested-by: Jenkins
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Product-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
QA-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>

instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms