Update strings for help (#83)

* Update help strings

The text for the backup description is cryptic.
Also, for cluster creation, we don't specify the defaults.

* Update create_cluster.go

cmd/backup/backup.go

@@ -38,8 +38,8 @@ var BackupCmd = &cobra.Command{
 
 var getBackupCmd = &cobra.Command{
 	Use:   "get",
-	Short: "Get backups for a cluster in YugabyteDB Managed",
-	Long:  "Get backups for a cluster in YugabyteDB Managed",
+	Short: "Get list of existing backups available for a cluster in YugabyteDB Managed",
+	Long:  "Get list of existing backups available for a cluster in YugabyteDB Managed",
 	Run: func(cmd *cobra.Command, args []string) {
 		authApi, err := ybmAuthClient.NewAuthApiClient()
 		if err != nil {

cmd/cluster/create_cluster.go

@@ -158,12 +158,12 @@ func init() {
 	createClusterCmd.MarkFlagRequired("cluster-name")
 	createClusterCmd.Flags().StringToString("credentials", nil, `[REQUIRED] Credentials to login to the cluster. Please provide key value pairs username=<user-name>,password=<password>.`)
 	createClusterCmd.MarkFlagRequired("credentials")
-	createClusterCmd.Flags().String("cloud-type", "", "[OPTIONAL] The cloud provider where database needs to be deployed. AWS or GCP.")
-	createClusterCmd.Flags().String("cluster-type", "", "[OPTIONAL] Cluster replication type. SYNCHRONOUS or GEO_PARTITIONED.")
+	createClusterCmd.Flags().String("cloud-type", "", "[OPTIONAL] The cloud provider where database needs to be deployed. AWS or GCP. Default AWS.")
+	createClusterCmd.Flags().String("cluster-type", "", "[OPTIONAL] Cluster replication type. SYNCHRONOUS or GEO_PARTITIONED. Default SYNCHRONOUS.")
 	createClusterCmd.Flags().StringToInt("node-config", nil, "[OPTIONAL] Configuration of the cluster nodes. Please provide key value pairs num-cores=<num-cores>,disk-size-gb=<disk-size-gb> as the value. If specified  num-cores is mandatory, disk-size-gb is optional.")
-	createClusterCmd.Flags().StringArray("region-info", []string{}, `[OPTIONAL] Region information for the cluster. Please provide key value pairs region=<region-name>,num-nodes=<number-of-nodes>,vpc=<vpc-name> as the value. If specified, region and num-nodes are mandatory, vpc is optional. Information about multiple regions can be specified.`)
-	createClusterCmd.Flags().String("cluster-tier", "", "[OPTIONAL] The tier of the cluster. Sandbox or Dedicated.")
-	createClusterCmd.Flags().String("fault-tolerance", "", "[OPTIONAL] The fault tolerance of the cluster. The possible values are NONE, ZONE and REGION.")
-	createClusterCmd.Flags().String("database-version", "", "[OPTIONAL] The database version of the cluster. Stable or Preview.")
+	createClusterCmd.Flags().StringArray("region-info", []string{}, `[OPTIONAL] Region information for the cluster. Please provide key value pairs region=<region-name>,num-nodes=<number-of-nodes>,vpc=<vpc-name> as the value. If specified, region and num-nodes are mandatory, vpc is optional. Information about multiple regions can be specified by using multiple --region-info arguments. Default if not specified is us-west-2 AWS region.`)
+	createClusterCmd.Flags().String("cluster-tier", "", "[OPTIONAL] The tier of the cluster. Sandbox or Dedicated. Default Sandbox.")
+	createClusterCmd.Flags().String("fault-tolerance", "", "[OPTIONAL] The fault tolerance of the cluster. The possible values are NONE, ZONE and REGION. Default NONE.")
+	createClusterCmd.Flags().String("database-version", "", "[OPTIONAL] The database version of the cluster. Stable or Preview. Default depends on cluster tier, Sandbox is Preview, Dedicated is Stable.")
 
 }