Move KUBERNETES_NODE_NAME env var to controller

KUBERNETES_NODE_NAME environment variable was defined in kuryr-daemon
DaemonSet instead of in kuryr-controller's Deployment. As it's only used
by kuryr-controller, this commit moves that definition to its correct
place.

Change-Id: Idec2961e6c820524290a20655930a2bfd2898621
Closes-Bug: 1798835

devstack/lib/kuryr_kubernetes

@@ -585,6 +585,11 @@ EOF
         imagePullPolicy: Never
         name: controller
         terminationMessagePath: "/dev/termination-log"
+        env:
+        - name: KUBERNETES_NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.nodeName
         volumeMounts:
         - name: config-volume
           mountPath: "/etc/kuryr/kuryr.conf"
@@ -653,10 +658,6 @@ spec:
         imagePullPolicy: Never
         command: [ "cni_ds_init" ]
         env:
-        - name: KUBERNETES_NODE_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: spec.nodeName
         - name: KURYR_CNI_POD_NAME
           valueFrom:
             fieldRef: