viriscsitest: Extend virISCSIConnectionLogin test
viriscsitest: Extend virISCSIConnectionLogin test

Extend this existing test so that a case when IQN is provided is
tested too. Since a special iSCSI interface is created and its
name is randomly generated at runtime we need to link with
virrandommock to have predictable names.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>
Reviewed-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

jardasgit/libvirt,jardasgit/libvirt,olafhering/libvirt,nertpinx/libvirt,crobinso/libvirt,libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,olafhering/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,jfehlig/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,libvirt/libvirt,libvirt/libvirt,jfehlig/libvirt,nertpinx/libvirt,andreabolognani/libvirt,olafhering/libvirt,zippy2/libvirt,crobinso/libvirt,libvirt/libvirt,fabianfreyer/libvirt,eskultety/libvirt,crobinso/libvirt,andreabolognani/libvirt,nertpinx/libvirt,eskultety/libvirt,crobinso/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,zippy2/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,eskultety/libvirt,andreabolognani/libvirt,jardasgit/libvirt,eskultety/libvirt,eskultety/libvirt,jardasgit/libvirt,andreabolognani/libvirt,zippy2/libvirt