Minor tweaks of the release vote and stage email templates.
KNOX-353 adding support for hadoop java client through redirection
KNOX-354 - added PseudoAuthFederation Provider to accept user.name as proof of a pre-authenticated authentication event.
KNOX-356 - change redirect servlet to use 307s instead of 302s
KNOX-310: Parsing of JSON response for rewriting failing
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/knox