message: Add fluvio consume -T short for --tail
  Per request, adding `-T` as a short flag for `--tail`
diff: @@ -57,7 +57,7 @@ pub struct ConsumeOpt {
  pub offset: Option<u32>,
  /// Consume records starting X from the end of the log (default: 10)
  - #[structopt(long, value_name = "integer", conflicts_with_all = &["from_beginning", "offset"])]
  + #[structopt(short = "T", long, value_name = "integer", conflicts_with_all = &["from_beginning", "offset"])]
  pub tail: Option<Option<u32>>,
  /// Maximum number of bytes to be retrieved
  