[osquery:master] 3 new commits by Ryan Holeman and 1 other:

<https://github.com/facebook/osquery/commit/a217035d121583dd9c9843021a46e93bcecb16c2|a217035>

Add AWS STS assume role authentication capability - Ryan Holeman

<https://github.com/facebook/osquery/commit/f93253ec48c47736bbf6a7b6d126713e166433e4|f93253e>

Nitpicks and style formatting - Teddy Reed

<https://github.com/facebook/osquery/commit/00d92a72c4de83658c7d777b98e7005632539594|00d92a7>

Merge pull request #2369 - Teddy Reed