helm: set DISCOVER_DAEMON_UDEV_BLACKLIST

While #4211 added support for the udev blacklist and also added it to
the values file, it omitted actually passing the value as environment
variable.

Signed-off-by: Jens Erat <email@jenserat.de>

deploy/charts/rook-ceph/templates/deployment.yaml

@@ -83,6 +83,8 @@ spec:
           value: "{{ .Values.hostpathRequiresPrivileged }}"
         - name: ROOK_DISABLE_DEVICE_HOTPLUG
           value: "{{ .Values.disableDeviceHotplug }}"
+        - name: DISCOVER_DAEMON_UDEV_BLACKLIST
+          value: "{{ .Values.discoverDaemonUdev }}"
         - name: ROOK_ENABLE_DISCOVERY_DAEMON
           value: "{{ .Values.enableDiscoveryDaemon }}"
         - name: ROOK_DISABLE_ADMISSION_CONTROLLER