deploy: add option to set default-fstype in provisioner

external-provisioner is exposing a new argument
to set the default fstype while starting the provisioner
sidecar, if the fstype is not specified in the storageclass
the default fstype will be applied for the pvc created from
the storageclass.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

charts/ceph-csi-rbd/templates/provisioner-deployment.yaml

@@ -52,6 +52,7 @@ spec:
             - "--timeout={{ .Values.provisioner.timeout }}"
             - "--leader-election=true"
             - "--retry-interval-start=500ms"
+            - "--default-fstype={{ .Values.provisioner.defaultFSType }}"
 {{- if .Values.topology.enabled }}
             - "--feature-gates=Topology=true"
 {{- end }}

charts/ceph-csi-rbd/values.yaml

@@ -110,6 +110,8 @@ nodeplugin:
 provisioner:
   name: provisioner
   replicaCount: 3
+  # if fstype is not specified in storageclass, ext4 is default
+  defaultFSType: ext4
   # deployController to enable or disable the deployment of controller which
   # generates the OMAP data if its not Present.
   deployController: true

deploy/rbd/kubernetes/csi-rbdplugin-provisioner.yaml

@@ -51,6 +51,8 @@ spec:
             - "--leader-election=true"
             #  set it to true to use topology based provisioning
             - "--feature-gates=Topology=false"
+            # if fstype is not specified in storageclass, ext4 is default
+            - "--default-fstype=ext4"
           env:
             - name: ADDRESS
               value: unix:///csi/csi-provisioner.sock