Shovel: self-contained shovel protocols (backport #14904)#14924

dcorbacho merged 2 commits intov4.2.xrabbitmq/rabbitmq-server:v4.2.xfrom

mergify/bp/v4.2.x/pr-14904rabbitmq/rabbitmq-server:mergify/bp/v4.2.x/pr-14904Copy head branch name to clipboard