Dictionary.rfc2868 update Value VLAN

[Jonathan]

Value VLAN seems to be missing

I know it isn't in the official IETF rfc2868 document, but it is required
for dynamic VLAN assignment to work properly when using VLAN as keyword.

--- dictionary.rfc2868.orig     2019-12-16 09:43:43.221198696 +0000
+++ dictionary.rfc2868  2019-12-16 09:47:47.841359659 +0000
@@ -34,6 +34,7 @@
 VALUE  Tunnel-Type                     GRE                     10
 VALUE  Tunnel-Type                     DVS                     11
 VALUE  Tunnel-Type                     IP-in-IP                12
+VALUE  Tunnel-Type                     VLAN                    13

 #      Tunnel Medium Type