Support for module example in leaf description

[bclaise]

I found a bug with the latest restconf draft https://tools.ietf.org/html/draft-ietf-netconf-restconf-14

There is an issue with the YANG module extraction
xym.py draft-ietf-netconf-restconf-14.txt
ERROR: 'draft-ietf-netconf-restconf-14.txt', Line 3930 - 'module' statement within another module
Created the following models::
example-ops.yang
example-actions.yang
example-jukebox.yang
example-mod.yang

Not an issue with the draft, but with the xym.py that can't deal with a module definition in a description:

container operations {
           description
             "Container for all operation resources
              (application/yang-operation),

              Each resource is represented as an empty leaf with the
              name of the RPC operation from the YANG rpc statement.
              For example, the 'system-restart' RPC operation defined
              in the 'ietf-system' module would be represented as
              an empty leaf in the 'ietf-system' namespace. This is
              a conceptual leaf, and will not actually be found in
              the module:

                 module ietf-system {                        <=====
                   leaf system-reset {
                     type empty;
                   }
                 }

[VinodSKumar]

Fix is merged in the below commit

5c2d5a6

[bclaise]

Fix works fine. Thanks.