fix(cinder-understack): workaround field mismatch from nova/cinder

The field that nova passes along in the nova ironic driver is
'initiator' but the NetApp cinder driver expects the data to be in the
'nqn' field, so copy it over for now and revisit this with upstream
to have a stable interface here with other drivers.

Author: skrobul

python/cinder-understack/cinder_understack/dynamic_netapp_driver.py

@@ -402,6 +402,9 @@ def extend_volume(self, volume, new_size):
 
     def initialize_connection(self, volume, connector):
         """Initialize connection to volume."""
+        # TODO: the nova ironic driver sends the field 'initiator' but the NetApp
+        # cinder driver expects the field to be 'nqn' so copy the field over
+        connector["nqn"] = connector["initiator"]
         with self._volume_to_library(volume) as lib:
             return lib.initialize_connection(volume, connector)