It is the source side of the shovel that must handle the basic.cancel
message from the source queue. This fix makes 091-10 and 091-local work,
handling the basic.cancel and restarting the shovel when required.

(cherry picked from commit 402e5b7)

AMQP1.0 doesn't emit metrics right after the initial connection,
it needs something to happen in the shovel to emit the first
blocked status report. By emitting metrics on the first running report,
all shovels will report the initial metrics as soon as they are initialised.

(cherry picked from commit 85d0e47)

…routing

(cherry picked from commit ef157e5)