Add explanatory in-line comment regarding single vs double quotes for sshpass

It was fixed in 8624b6dcb311635679969392672fb31b272c9581. And since the
Salt coding style is to use single quotes it makes sense to explain in
the code why this needs to be the way it is.
Merge pull request #8315 from scott-w/develop

Initial SQS implementation
Fix typos
Merge pull request #8316 from holmboe/pylint-and-comments

In-line comments and typos
add utf-8 line
remove extra whitespace
must have space on either side of assignment
Merge pull request #8317 from UtahDave/develop

pylint fixes.
Merge remote-tracking branch 'upstream/develop' into develop