gemini: default cli arg for replication strategy

cmd/gemini/root.go

@@ -344,7 +344,7 @@ func init() {
 	rootCmd.Flags().StringVarP(&bind, "bind", "b", ":2112", "Specify the interface and port which to bind prometheus metrics on. Default is ':2112'")
 	rootCmd.Flags().DurationVarP(&warmup, "warmup", "", 30*time.Second, "Specify the warmup perid as a duration for example 30s or 10h")
 	rootCmd.Flags().StringVarP(&compactionStrategy, "compaction-strategy", "", "", "Specify the desired CS as either the coded short hand stcs|twcs|lcs to get the default for each type or provide the entire specification in the form {'class':'....'}")
-	rootCmd.Flags().StringVarP(&replicationStrategy, "replication-strategy", "", "", "Specify the desired replication strategy as either the coded short hand simple|network to get the default for each type or provide the entire specification in the form {'class':'....'}")
+	rootCmd.Flags().StringVarP(&replicationStrategy, "replication-strategy", "", "simple", "Specify the desired replication strategy as either the coded short hand simple|network to get the default for each type or provide the entire specification in the form {'class':'....'}")
 	rootCmd.Flags().StringVarP(&consistency, "consistency", "", "QUORUM", "Specify the desired consistency as ANY|ONE|TWO|THREE|QUORUM|LOCAL_QUORUM|EACH_QUORUM|LOCAL_ONE")
 	rootCmd.Flags().IntVarP(&maxPartitionKeys, "max-partition-keys", "", 6, "Maximum number of generated partition keys")
 	rootCmd.Flags().IntVarP(&minPartitionKeys, "min-partition-keys", "", 2, "Minimum number of generated partition keys")