improvement lettuce plugin

[zuohl]

Please answer these questions before submitting your issue.

• Why do you submit this issue?
• Feature or performance improvement

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Requirement or improvement

• Please describe about your requirements or improvement suggestions.
  Lettuce plugin can only display command type, not specific key,like jetty plugin

[wu-sheng]

Contribution is welcome. This should not be hard.

[zuohl]

Contribution is welcome. This should not be hard.

ok,thank you,then i will don`t need submit a pull request