[reims] network api source added.

generators/input/sites/reims/net-links/sw-grid-a.yaml

 --- 
-gw: 
+sw-grid-a: 
   model: cisco
   kind: router
   site: reims
@@ -12,7 +12,7 @@ gw:
     0: 
       naming_pattern: Gi%LINECARD%/%PORT%
       kind: node
-      rate: 1000
+      rate: 1000000
       ports: 
         1: stremi-1
         2: stremi-2