redis 2.8.11
redis: update 2.8.11 bottle.

Closes #30055.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
RabbitMQ 3.2.2
rabbitmq: add 3.3.2 bottle.

Closes #30058.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Use Digest#file if it's available
Use assert_empty
Fix up some assertions