METRON-1381: Add Apache license to MD files and remove the Rat exclusion

[justinleet]

Added an HTML comment license header to all the MD files. Removed the RAT exclusion for MD files, so we make sure to do it going forward.

It can be tested by looking at the GitHub rendering, along with building the site-book and making sure no Apache headers show up. You can also create a .md file without a header and run the rat check to ensure that it catches the problem.

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[nickwallen]

+1 (pending Travis) Looks good. Ran through some tests as you described and everything worked. Validated both Github and site-book rendering.

[ottobackwards]

+1

[justinleet]

@ottobackwards @JonZeolla Merged in master and added header to new markdown file (the deb deployment one). Once you two are satisfied with the new commit, and I've run through the outstanding PRs for potentially problematic ones, I'm good with merging this in.

[JonZeolla]

Did you mean to tag @nickwallen in that last comment? I took a quick look and it all looks good to me but didn't do any verification that you got all of the md files (depending on Travis), and didn't spin up the site-book.

[justinleet]

@JonZeolla Yes, I did. No idea what I was thinking, in all honesty.

@nickwallen You're the actual person I wanted here.

[justinleet]

@nickwallen @ottobackwards I'm going to (possibly annoyingly) ping again and use the excuse that the holidays are over.

[ottobackwards]

I'm +1

[nickwallen]

+1