Improved Reactor example of passing pillar data through to state.sls

No need for crazy string building and parsing here. Just pass a
dictionary!
Merge pull request #11526 from s0undt3ch/develop

It's `result` not `return`.
Merge pull request #11520 from whiteinge/doc-reactor-pillar

Improved Reactor example of passing pillar data through to state.sls
Remove unused import.
Merge pull request #11530 from s0undt3ch/hotfix/jenkins

Remove unused import.
Properly handle `IOError`'s and `OSError`'s at the parser level.
Merge pull request #11533 from s0undt3ch/hotfix/catch-config-load-ioerror

Properly handle `IOError`'s and `OSError`'s at the parser level.
`parse_input` is not on `salt.utils.args`