Add missing policy protect routes for the Repository controller

https://bugzilla.redhat.com/show_bug.cgi?id=1134068
https://bugzilla.redhat.com/show_bug.cgi?id=1134070
Force binary in an expectation since UTF-8 is the default in ruby 2.0.

When reading the spec file contents, ruby tries to convert any sequences in the binary string to UTF-8.
We have to force the encoding as binary to keep the expected value as binary, which is the format the underlying code returns the strings.

See: https://www.ruby-lang.org/en/news/2013/02/24/ruby-2-0-0-p0-is-released/
Fixed typo in a comment.