GH-3798: Wrap DNS request validation in a retry
GH-3798: Wrap DNS request validation in a retry

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