Please backport open-iscsi 2.0.873-3ubuntu5 (main) from quantal

Please backport open-iscsi 2.0.873-3ubuntu5 (main) from raring to precise.

Reason for the backport:
========================
The version of open-iscis as shipped in precise disables startup when the
root device is an iscsi lun. This makes it impossible to use diskless nodes
as openstack compute hosts and make use of cinder functionality.

We are using this version on precise in production.

Testing:
========
Mark off items in the checklist [X] as you test them, but please leave the checklist so that backporters can quickly evaluate the state of testing.

You can test-build the backport in your PPA with backportpackage:
$ backportpackage -u ppa:<lp username>/<ppa name> -s raring -d precise open-iscsi
$ backportpackage -u ppa:<lp username>/<ppa name> -s raring -d quantal open-iscsi

* precise:
[x] Package builds without modification
[x] open-iscsi-utils installs cleanly and runs
[x] open-iscsi installs cleanly and runs
[x] open-iscsi-udeb installs cleanly and runs

Reverse dependencies:
=====================
The following reverse-dependencies need to be tested against the new version of open-iscsi. For reverse-build-dependencies (-Indep), please test that the package still builds against the new open-iscsi. For reverse-dependencies, please test that the version of the package currently in the release still works with the new open-iscsi installed. Reverse- Recommends, Suggests, and Enhances don't need to be tested, and are listed for completeness-sake.

open-iscsi-utils
----------------
* libvirt
  [x] precise (Reverse-Build-Depends)

open-iscsi
----------
* dracut-network
  [ ] precise (Reverse-Recommends)
* nova-compute
  [x] precise (Reverse-Depends)

open-iscsi-udeb
---------------