Fix ArtifactRepositoryValidator creation error message.

The error message has a placeholder for reporting the comparator id
requested but not existing but it was not binded.
Also some for-each conversions in the file while on it.

Change-Id: Ie28554fa346a720c43b583a6a5941ced7f7086c6
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
1 file changed