Advertise any other protocol in the discovery endpoint

Author: glpatcern

spec.yaml

@@ -329,14 +329,12 @@ definitions:
                     The top-level WebDAV path at this endpoint. In order to access
                     a remote shared resource, implementations MAY use this path
                     as a prefix, or as the full path (see sharing examples).
-                  example: /remote/dav/ocm/
                 webapp:
                   type: string
                   description: |
                     The top-level path for web apps at this endpoint. This value
                     is provided for documentation purposes, and it SHALL NOT
                     be intended as a prefix for share requests.
-                  example: /app/ocm/
                 datatx:
                   type: string
                   description: |
@@ -345,7 +343,19 @@ definitions:
                     NOT be intended as a prefix. In addition, implementations
                     are expected to execute the transfer using WebDAV as
                     the wire protocol.
-                  example: /remote/dav/ocm/
+              patternProperties:
+                "^.*$":
+                type: string
+                description: |
+                   Any additional protocol supported for this resource type MAY
+                   be advertised here, where the value corresponds to the top-level
+                   URI to be used for that protocol.
+              example:
+                protocols:
+                  webdav: "/remote/dav/ocm/"
+                  webapp: "/app/ocm/"
+                  datatx: "/remote/dav/ocm/"
+                  talk: "/apps/spreed/api/"
       capabilities:
         type: array
         description: |