Add leading and trailing backslashes
A couple of unit tests did not have have leading or trailing backslashes when
setting their test category resulting in a warning message being displayed.
Added the backslash where needed.
........
Merged revisions 362680 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........
Merged revisions 362681 from http://svn.asterisk.org/svn/asterisk/branches/10
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@362682
65c4cc65-6c06-0410-ace0-
fbb531ad65f3