[Subtask]: Use a new configuration item to control whether master & slave mode is enabled.

[wardlican]

A new configuration item has been added to control whether master & slave mode is enabled, in order to support the horizontal scaling capability of AMS.

Why are the changes needed?

Close #3845

Brief change log

Add a new configuration USE_MASTER_SLAVE_MODE to control whether master & slave mode is enabled.

How was this patch tested?

• [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

• [ ] Add screenshots for manual tests if appropriate

• [ ] Run test locally before making a pull request

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)