Plugins are no longer following semantic versioning, and frequently
include additional versioning information.
pkg_resources.parse_version generally handles this well, but some
versions with a hyphen will return a LegacyVersion object rather than
a Version object, causing it to always compare as lower than any
Version object.
Simply replacing any '-' with '+' fixes this issue, and does not
materially change the versioning.
Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: I5ad949d688ce7ebd0d183d69f4ce87b35343357f