feat: audit logging rotation

magnum/drivers/common/templates/kubernetes/fragments/configure-kubernetes-master.sh

@@ -398,6 +398,7 @@ fi
 
 KUBE_AUDIT_LOGGING_POLICY="/etc/kubernetes/audit-policy.yaml"
 KUBE_AUDIT_LOGGING_WEBHOOK="/etc/kubernetes/webhook-audit-policy.yaml"
+KUBE_AUDIT_LOGGING_ADDITIONAL_FLAGS="--audit-log-maxsize=200 --audit-log-maxbackup=10 --audit-log-maxage=30"
 mkdir -p $(dirname ${KUBE_AUDIT_LOGGING_POLICY})
 if [ "$kube_min_version" -ge "31" ]; then
   cat << EOF > ${KUBE_AUDIT_LOGGING_POLICY}
@@ -488,7 +489,7 @@ contexts:
 current-context: k8s-audit
 EOF
 
-  KUBE_API_ARGS="$KUBE_API_ARGS --audit-log-path=- --audit-policy-file=$KUBE_AUDIT_LOGGING_POLICY --audit-webhook-config-file=$KUBE_AUDIT_LOGGING_WEBHOOK"
+  KUBE_API_ARGS="$KUBE_API_ARGS --audit-log-path=- --audit-policy-file=$KUBE_AUDIT_LOGGING_POLICY --audit-webhook-config-file=$KUBE_AUDIT_LOGGING_WEBHOOK $KUBE_AUDIT_LOGGING_ADDITIONAL_FLAGS"
 fi
 
 KUBE_ADMISSION_CONTROL=""