webdav: make certificate field required (#2367)

* webdav: make certificate field required

* untouch lines

library/ix-dev/community/webdav/Chart.yaml

@@ -4,7 +4,7 @@ description: WebDAV is a set of extensions to the HTTP protocol which allows use
 annotations:
   title: WebDAV
 type: application
-version: 1.0.21
+version: 1.0.22
 apiVersion: v2
 appVersion: 2.4.59
 kubeVersion: '>=1.16.0-0'

library/ix-dev/community/webdav/questions.yaml

@@ -134,6 +134,7 @@ questions:
                 description: The certificate to use for HTTPS WebDAV.
                 schema:
                   type: int
+                  required: true
                   "null": true
                   $ref:
                     - "definitions/certificate"