Stale replica should allow MULTI/EXEC
Stale replica should allow MULTI/EXEC

Example: Client uses a pipe to send the following to a
stale replica:

MULTI
.. do something ...
DISCARD

The replica will reply the MUTLI with -MASTERDOWN and
execute the rest of the commands... A client using a
pipe might not be aware that MULTI failed until it's
too late.

I can't think of a reason why MULTI/EXEC/DISCARD should
not be executed on stale replicas...

Also, enable MULTI/EXEC/DISCARD during loading

yossigo/redis,neomantra/redis,oranagra/redis,antirez/redis,antirez/redis,ofirluzon/redis,ofirluzon/redis,ctripcorp/redis,charsyam/redis,oranagra/redis,PKRoma/redis,charsyam/redis,oranagra/redis,charsyam/redis,ofirluzon/redis,ctripcorp/redis,antirez/redis,soloestoy/redis,ofirluzon/redis,neomantra/redis,yossigo/redis,ctripcorp/redis,ofirluzon/redis,oranagra/redis,charsyam/redis,PKRoma/redis,soloestoy/redis,yossigo/redis,neomantra/redis,neomantra/redis,antirez/redis,PKRoma/redis,oranagra/redis,PKRoma/redis,soloestoy/redis,yossigo/redis,soloestoy/redis,PKRoma/redis,soloestoy/redis,charsyam/redis,neomantra/redis,ctripcorp/redis,yossigo/redis