test: unflake TestCatalogServiceNodes_DistanceSort
test: unflake TestCatalogServiceNodes_DistanceSort

Remove a time.Sleep and replace with retry.Run around call to
CatalogServiceNodes.

scalp42/consul,42wim/consul,hashicorp/consul,scalp42/consul,kingland/consul,kingland/consul,42wim/consul,42wim/consul,scalp42/consul,hashicorp/consul,kingland/consul,hashicorp/consul,hashicorp/consul,42wim/consul,kingland/consul,kingland/consul,scalp42/consul,42wim/consul,scalp42/consul