Mailtrigger

- Add support for authorization with **auther**
- Add support for query, rebase, and reviewer in **gerrit trigger**
- Append **trigger** message to comments in gerrit change
- Refactor code for **trigger**

- Fix pytest error caused by **trigger**
- Set change number as parameter in **gerrit triigger**

- Add support for gerrit review in **dispatcher** of gerrit trigger

- Fix pytest error for **trigger**

- Refactor code for **trigger**

- Remove duplicated item from **printer**