OCPBUGS-45182: add startupProbe to csi-driver.

The csi-driver-nfs container requires an NFS socket to be created
before the csi-driver container can operate.
If the socket is not available at startup, the pod will restart
unnecessarily due to initialization failure.

Using a postStart hook to check for the socket is not reliable,
as Kubernetes does not guarantee the hook will execute before
the container's entrypoint starts.

This patch introduces a startupProbe to verify the existence of the NFS socket.
The probe will run for up to one minute, allowing sufficient time for the socket
to be created and avoiding premature pod restarts.
The existing livenessProbe remains responsible for ongoing health checks.

assets/overlays/openstack-manila/generated/hypershift/controller.yaml

@@ -126,6 +126,15 @@ spec:
           requests:
             cpu: 10m
             memory: 50Mi
+        startupProbe:
+          exec:
+            command:
+            - sh
+            - -c
+            - test -S /plugin/csi-nfs.sock
+          failureThreshold: 6
+          initialDelaySeconds: 30
+          periodSeconds: 5
         terminationMessagePolicy: FallbackToLogsOnError
         volumeMounts:
         - mountPath: /plugin

assets/overlays/openstack-manila/generated/standalone/controller.yaml

@@ -96,6 +96,15 @@ spec:
           requests:
             cpu: 10m
             memory: 50Mi
+        startupProbe:
+          exec:
+            command:
+            - sh
+            - -c
+            - test -S /plugin/csi-nfs.sock
+          failureThreshold: 6
+          initialDelaySeconds: 30
+          periodSeconds: 5
         terminationMessagePolicy: FallbackToLogsOnError
         volumeMounts:
         - mountPath: /plugin

assets/overlays/openstack-manila/patches/controller_add_driver.yaml

@@ -81,6 +81,17 @@ spec:
             timeoutSeconds: 10
             periodSeconds: 30
             failureThreshold: 5
+          # CSI driver initialization requires that the NFS driver socket
+          # exists which should take less than a minute.
+          startupProbe:
+            exec:
+              command:
+              - sh
+              - -c
+              - "test -S /plugin/csi-nfs.sock"
+            initialDelaySeconds: 30
+            periodSeconds: 5
+            failureThreshold: 6
           volumeMounts:
             - name: socket-dir
               mountPath: /plugin