When creating a media with some format can lead to the foreman being stuck:

The root cause is the regular expression checking the name of media on spaces:

"SimpleOrg/Dev_Env/PublishedRHEL532 RHEL Server 5.9 i386" =~ /\A(\S+\s?)+\Z

This takes ages to compute.

On the other hand, it doesn't catch this example "My Media with trailing space "

The more efficient and working regexp should be

/\A(\S+\s)*\S+\Z/

Going to send a PR

(from https://bugzilla.redhat.com/show_bug.cgi?id=976362)