Switch meetpad to the opendev etherpad

The new opendev etherpad is up and running. While not in production yet
(we need to transition the DB from etherpad.openstack.org) it should be
fine to have meetpad start using it now as meetpad isn't in production
either.

Change-Id: Ic1917688cba37c03e45e3bccbce6fc723022b94c

playbooks/roles/jitsi-meet/files/config.js

@@ -251,7 +251,7 @@ var config = {
     // Whether to use a welcome page or not. In case it's false a random room
     // will be joined when no room is specified.
     enableWelcomePage: true,
-    etherpad_base: 'https://etherpad-dev.openstack.org/p/',
+    etherpad_base: 'https://etherpad.opendev.org/p/',
     useRoomAsSharedDocumentName: true,
     openSharedDocumentOnJoin: true,
 

playbooks/roles/jitsi-meet/files/jitsi-meet-docker/.env

@@ -13,7 +13,7 @@ TZ=Etc/UTC
 PUBLIC_URL="https://meetpad.opendev.org"
 
 # Set etherpad-lite URL (uncomment to enable).
-ETHERPAD_URL_BASE=https://etherpad-dev.openstack.org/p/
+ETHERPAD_URL_BASE=https://etherpad.opendev.org/p/
 
 #
 # Basic configuration options