after refactoring in ietf-mpls-static model in-segment grouping is missing in static-lsp-top_config.

For hc2vpp-ietf-mpls-static@2017-07-02 it was added back to static-lsp-top_config, because it was there before the refactorings in draft.

hc2vpp-ietf-mpls-static@2017-07-02 defines "in-segment" grouping, which was never used. based on the analysis this grouping belongs to static-lsp-top_config (older versions of the same model use in-segment grouping there). To resolve this issue it was added back to "static-lsp-top_config" grouping:

grouping static-lsp-top_config {
description "Static LSP configuration grouping";
uses in-segment;
leaf name

{ type string; description "name to identify the LSP"; }

leaf operation

{ type mpls-operations-type; description "The MPLS operation to be executed on the incoming packet"; }

}