Matrix bridge doesn't need to have exclusive control over the namespa…

…ces in a self-service world

As part of the [sunset plan for Gitter]
(element-hq/roadmap#26), we need to make the
appservice not be exclusive over the namespaces defined in the appservice
registration file so people don't run into errors when they self-service and try to create things.

Part of element-hq/matrix-hosted#6979

modules/matrix-bridge/lib/matrix-bridge.js

@@ -29,21 +29,21 @@ const registrationConfig = AppServiceRegistration.fromObject({
   namespaces: {
     users: [
       {
-        exclusive: true,
+        exclusive: false,
         // Reserve these MXID's (usernames)
         regex: `@.*-[0-9a-f]+:${serverName}`
       }
     ],
     aliases: [
       {
-        exclusive: true,
+        exclusive: false,
         // Reserve these room aliases
         regex: `#.*:${serverName}`
       }
     ],
     rooms: [
       {
-        exclusive: true,
+        exclusive: false,
         // This regex is used to define which rooms we listen to with the bridge.
         // This does not reserve the rooms like the other namespaces.
         regex: '.*'