Start the iscsi-init service (#1880673)
Start the iscsi-init service (#1880673)

The startup method of the iSCSI class should start the iscsi-init service that
generates the /etc/iscsi/initiatorname.iscsi file. Otherwise, the file might
not exist and the getter of the initiator property might raise an exception.

Resolves: rhbz#1880673

jkonecny12/blivet,rvykydal/blivet,jkonecny12/blivet,rvykydal/blivet,vojtechtrefny/blivet,vojtechtrefny/blivet