Fix output location for errors block
Fix output location for errors block

Previously the location of the pretty block for ERRORS has been
accidentally changed from stdout to stderr. This patch reverts this
mistake.

Signed-off-by: Vinzenz Feenstra <600e8a10eeff4f08c65e2cf493cd851025e86fd2@redhat.com>

leapp-to/prototype,leapp-to/prototype,leapp-to/prototype,leapp-to/prototype