Reformat documentation blocks

Summary:
This change normalizes the documentation blocks both among Salt
and deployed scripts.

Context

At some point, style of all the blocks have changed from this style:

#   -------------------------------------------------------------
#   Container
#   -------------------------------------------------------------

to this one:

#   -------------------------------------------------------------
#   Container
#   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Reformat utility

The reformat script is intended to be used as reformat <file>.
That would a good linter/autofixer.

To convert all the repository, the following commands have been used:
git ls-files | xargs -n 1 utils/reformat.py

Test Plan: Proofread blocks, convert all this repo

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D2261