webadmin: There are no splitters in the Host>Interface header

Change-Id: Icb276a805508b5f2729f609ec2861504a561acea
Bug-Url: https://bugzilla.redhat.com/1115310
Signed-off-by: Alona Kaplan <alkaplan@redhat.com>
(cherry picked from commit b0238c4650745a8fae5764b9f3d864200c162330)