XMPP collaboration and scalability testing

There are three cases we want to test for

• XO's failing to connect to the xmpp server: (#5908)
• The xmpp server falling over (runs out of memory) (#5313)
• XO's and activities not showing up in all neighbourhood views (#6884,#6888,#6940,#7457)

Specifically, we want to know if these situations occur under all loads or only when the xmmp server has a certain amount of logged in users. And ofcourse, if the bug is on the server side or the client side

Work in progress..

Test plan

• Setup a ejabberd server running the same version and with the same configuration (including shared roster patches) as on XS.

FIXME: What's this configuration exactly?

• Configure N XO's and/or sugar-jhbuild instances to use this server
• Connect them to the jabber server
• Check if N buddies are displayed on the mesh view (using the sugar-xos script) of each laptop
• For each buddy:
  • Start and share a Connect instance
  • Check if this activity is displayed on the mesh view of each laptop (FIXME: write a xo-activities script ?)

Then restart the procedure with N+M laptops