[Unity] Return logged-out initiators

In current implementation, Unity driver doesn't return the targets which
connect to the logged-out initiators, which causes the zone manager
fails to clean up the FC zone.

The fix returns all the targets of specified initiators no matter they
are logged in or not.

Change-Id: I1438d0bd4a43e1813dfb0a6e9b3c4a177c2fee8f
Closes-bug: #1773305
(cherry picked from commit 1ef06d4a31)

cinder/volume/drivers/dell_emc/unity/adapter.py

@@ -795,7 +795,7 @@ class FCAdapter(CommonAdapter):
     def filter_targets_by_host(self, host):
         if self.auto_zone_enabled and not host.host_luns:
             return self.client.get_fc_target_info(
-                host=host, logged_in_only=True,
+                host=host, logged_in_only=False,
                 allowed_ports=self.allowed_ports)
         return []
 

cinder/volume/drivers/dell_emc/unity/driver.py

@@ -67,9 +67,11 @@ class UnityDriver(driver.ManageableVD,
         3.1.4 - Fixes bug 1775518 to make sure driver succeed to initialize
                 even though the value of unity_io_ports and
                 unity_storage_pool_names are empty
+        3.1.5 - Cherry-pick the fix for 1773305 to return the targets which
+                connect to the logged-out initiators
     """
 
-    VERSION = '03.01.04'
+    VERSION = '03.01.05'
     VENDOR = 'Dell EMC'
     # ThirdPartySystems wiki page
     CI_WIKI_NAME = "EMC_UNITY_CI"

releasenotes/notes/unity-return-logged-out-initiator-6ab1f96f21bb284c.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Dell EMC Unity Driver: Fixes `bug 1773305
+    <https://bugs.launchpad.net/cinder/+bug/1773305>`__
+    to return the targets which connect to the logged-out initiators. Then the
+    zone manager could clean up the FC zone based on the correct target wwns.