iscsi: Establish connection to target via static target login
iscsi: Establish connection to target via static target login

https://bugzilla.redhat.com/show_bug.cgi?id=1356436

Commit id '56057900' altered the discovery of iSCSI node targets by
using the "--op nonpersistent". This caused issues for clean environments
or if by chance a "-m node -o delete" was executed.

Since each iSCSI Storage Pool has the required iSCSI target path, use
that and the virISCSINodeNew API in order to generate the iSCSI node record.

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