* give an uniform check for release process
* fixed as the review of adamreese: update the err message when releasename is empty and update the test units.
* fixed as the review of bacongobbler: add more detail information to return message. the regex rule is added to the return message.
For some reason, GetReleaseContent was configured to return the latest
release only if it is in state DEPLOYED. But a release with a version is
returned regardless of release. This made it really hard to debug failed
releases, even though we have the data to show.
Closes#2525
Matthew Fisher
Y.W
Adam Reese
Matt Butcher
fibonacci1729