Description of problem:
be2iscsi driver is not included in introspection and boot initramfs images for overcloud

Version-Release number of selected component (if applicable):


How reproducible:
Introspection fails on diskless nodes with iscsi attached root disk when using default introspection image


Additional info:
Issue was solved by rebuilding the introspection and boot images using DIB.
drivers atted to images:
be2iscsi
dm_multipath
iscsi_target_mod

rpm's added to overcloud image:
iscsi-initiator-utils
openstack-ironic-python-agent

Patch added to ironic_python_agent:

--- /lib/python2.7/site-packages/ironic_python_agent/hardware.py        2016-07-18 22:02:53.668820422 -0400
+++ /lib/python2.7/site-packages/ironic_python_agent/hardware.py        2016-07-18 14:40:33.578307259 -0400
@@ -52,6 +52,27 @@
     except IOError:
         LOG.warning("Can't find the device vendor for device %s", dev)

+def _check_for_iscsi():
+    """iscsi detection
+    iscsistart -f will print the iBFT or OF info.
+    In case such connection exists, we would like to issue
+    iscsistart -b to create a session to the target.
+    - if no connection is detected we simply return.
+    """
+    if os.path.exists('/var/run/iscsistart.pid'):
+        return
+    else :
+        utils.execute('/bin/touch','/var/run/iscsistart.pid')
+    try:
+        utils.execute('iscsistart', '-f')
+    except processutils.ProcessExecutionError as e:
+        LOG.info('No iscsi connection detected. Skipping iscsi.')
+        return
+    try:
+        utils.execute('iscsistart', '-b')
+    except processutils.ProcessExecutionError as e:
+        LOG.warning('Something went wrong executing iscsistart -b'
+                    'Error: %s', e)

 def _udev_settle():
     """Wait for the udev event queue to settle.
@@ -383,6 +404,7 @@

     def evaluate_hardware_support(self):
         # Do some initialization before we declare ourself ready
+        _check_for_iscsi()
         self._wait_for_disks()
         return HardwareSupport.GENERIC