The iscsid service is used in sevral components like nova, cinder,
glance and so on to connect to iscsi devices. This change introduces
the new class to manage basic configuration of the iscsid service.
Co-authored-by: Alfredo Moralejo <amoralej@redhat.com>
Change-Id: I3fc6d1192632cc1458d00900508d548f522e9cdb
(cherry picked from commit 6e67434c27)