webadmin: Networks General sub-tab- Role section has misplaced comma

Items listed on the right of "Role" has an odd space before comma.
The space should be after the comma.

Change-Id: I19cc13aff4a2bf9d2e6c97e282a6fc6103bb12e8
Bug-Url: https://bugzilla.redhat.com/949759
Signed-off-by: Alona Kaplan <alkaplan@redhat.com>