Break symmetry when upgrading from K to L
Merge pull request #39 from Metaswitch/cass-reordering-upgrade-support

Break symmetry when upgrading from K to L
Fix security groups after for AIO node, and also allow bobn's to talk to each other on port 5058 (fixes #40)
Remove references to garden - no-one uses it any more
Also add a 5054 firewall rule for sprout
Merge pull request #42 from Metaswitch/port_5054

[Reviewer: Matt] Fix security groups after for AIO node, and also allow bonos to talk to...
Merge pull request #41 from Metaswitch/remove_garden_ref

[Reviewer: Andy] Remove references to garden - no-one uses it any more
Code review comments
Merge remote-tracking branch 'origin/master' into aio_node_ami