deploy: allowPrivilegeEscalation: true in containerSecurityContext

When running the kubernetes cluster with one single privileged
PodSecurityPolicy which is allowing everything the nodeplugin
daemonset can fail to start. To be precise the problem is the
defaultAllowPrivilegeEscalation: false configuration in the PSP.
 Containers of the nodeplugin daemonset won't start when they
have privileged: true but no allowPrivilegeEscalation in their
container securityContext.

Kubernetes will not schedule if this mismatch exists cannot set
allowPrivilegeEscalation to false and privileged to true:

Signed-off-by: Silvan Loser <silvan.loser@hotmail.ch>
Signed-off-by: Silvan Loser <33911078+losil@users.noreply.github.com>

deploy/cephfs/kubernetes/csi-cephfsplugin.yaml

@@ -26,6 +26,7 @@ spec:
           # created by privileged CSI driver container.
           securityContext:
             privileged: true
+            allowPrivilegeEscalation: true
           image: registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.4.0
           args:
             - "--v=5"
@@ -106,6 +107,7 @@ spec:
         - name: liveness-prometheus
           securityContext:
             privileged: true
+            allowPrivilegeEscalation: true
           image: quay.io/cephcsi/cephcsi:canary
           args:
             - "--type=liveness"

deploy/rbd/kubernetes/csi-rbdplugin.yaml

@@ -28,6 +28,7 @@ spec:
           # created by privileged CSI driver container.
           securityContext:
             privileged: true
+            allowPrivilegeEscalation: true
           image: registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.4.0
           args:
             - "--v=5"
@@ -124,6 +125,7 @@ spec:
         - name: liveness-prometheus
           securityContext:
             privileged: true
+            allowPrivilegeEscalation: true
           image: quay.io/cephcsi/cephcsi:canary
           args:
             - "--type=liveness"