Fix creation of bootable volume error in Caracal

Fixes an issue in Caracal where setting a volume's bootable property
fails due to uninitialized oslo_privesp daemon inside cinder-volume
container.
This is a temporary workaround to set cinder-volume as privileged in
cinder static overrides. The details of the fix and associated task are
also in Openstack Storyboard.

Test Plan:
- PASS: Apply stx-openstack with changes.
- PASS: Verify bootable volume creation.

Closes-Bug: 2100010

Reference: https://storyboard.openstack.org/#!/story/2011307

Change-Id: I39cbdcb85ad81a66da7e4331cc1a543cb8416d68
Signed-off-by: Mateus Nascimento <mateus.soaresdonascimento@windriver.com>

stx-openstack-helm-fluxcd/stx-openstack-helm-fluxcd/manifests/cinder/cinder-static-overrides.yaml

@@ -67,6 +67,11 @@ pod:
       - key: openstack-compute-node
         operator: Exists
         effect: NoSchedule
+  security_context:
+    cinder_volume:
+      container:
+        cinder_volume:
+          privileged: true
 network:
   api:
     ingress: