Change nicks of bots for Vagrant

This changes the nicks of EcheLOn and XpartaMuPP when running the lobby
with Vagrant so they match the local parts of the JID. This is to avoid
triggering the JID-nick-mismatch detection which would let the
moderation bot kick the other bots from the lobby, unless they were
added to the list of exemptions.

config-lobby-vagrant.yml

@@ -24,7 +24,7 @@ bots: [
     "config": {
       "login": "xpartamupp",
       "password": xpartamupp,
-      "nickname": "WFGBot",
+      "nickname": "XpartaMuPP",
       "domain": "localhost",
       "room": "arena",
       "no_verify": true,
@@ -39,7 +39,7 @@ bots: [
     "config": {
       "login": "echelon",
       "password": echelon,
-      "nickname": "RatingsBot",
+      "nickname": "EcheLOn",
       "domain": "localhost",
       "room": "arena",
       "no_verify": true,