Fix PowerStore iSCSI targets filtering

If PowerStore ports are configured for multiple purposes
(iSCSI, Replication, etc.) driver will report that no accessible
iSCSI targets found because of the wrong REST filter.

Closes-Bug: #1920729
Change-Id: I1175d68466ac069e90ecaeef51ec6adb444241d3

cinder/volume/drivers/dell_emc/powerstore/client.py

@@ -390,7 +390,7 @@ class PowerStoreClient(object):
         r, response = self._send_get_request(
             "/ip_pool_address",
             params={
-                "purposes": "eq.{Storage_Iscsi_Target}",
+                "purposes": "cs.{Storage_Iscsi_Target}",
                 "select": "address,ip_port(target_iqn)"
 
             }

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

@@ -47,9 +47,12 @@ class PowerStoreDriver(driver.VolumeDriver):
         1.0.1 - Add CHAP support
         1.1.0 - Add volume replication v2.1 support
         1.1.1 - Add Consistency Groups support
+        1.1.2 - Fix iSCSI targets not being returned from the REST API call if
+                targets are used for multiple purposes
+                (iSCSI target, Replication target, etc.)
     """
 
-    VERSION = "1.1.1"
+    VERSION = "1.1.2"
     VENDOR = "Dell EMC"
 
     # ThirdPartySystems wiki page

releasenotes/notes/bug-1920729-powerstore-iscsi-targets-filtering-9623ac03da5c6721.yaml

@@ -0,0 +1,8 @@
+---
+fixes:
+  - |
+    PowerStore driver `Bug #1920729
+    <https://bugs.launchpad.net/cinder/+bug/1920729>`_: Fix
+    iSCSI targets not being returned from the REST API call if
+    targets are used for multiple purposes
+    (iSCSI target, Replication target, etc.).