agent: fix TestRetryJoin
agent: fix TestRetryJoin

hashicorp/consul,kingland/consul,vamage/consul,i0rek/consul,vamage/consul,youhong316/consul,kingland/consul,vamage/consul,kingland/consul,scalp42/consul,hashicorp/consul,kingland/consul,scalp42/consul,calgaryscientific/consul,calgaryscientific/consul,scalp42/consul,hashicorp/consul,kingland/consul,youhong316/consul,42wim/consul,calgaryscientific/consul,scalp42/consul,calgaryscientific/consul,i0rek/consul,vamage/consul,youhong316/consul,42wim/consul,vamage/consul,i0rek/consul,youhong316/consul,i0rek/consul,42wim/consul,42wim/consul,scalp42/consul,42wim/consul,i0rek/consul,hashicorp/consul,calgaryscientific/consul,youhong316/consul