Add option for ToRRouter

[Xichen96]

Description

Currently ToRRouter related features are turned on by finding the string ToRRouter in device type, which caused a problem recently because a ToRRouter device is named MgmtTsToR, which does not contain the string ToRRouter. Several pr has been opened to fix all places where device type is used to determine whether a device is ToRRouter. There should be a new option like is ToRRouter to eliminate this type of problem in the future.

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[Blueve]

Can you link all short-term fix PRs here?

[zhangyanzhao]

Please go to the release planning

[Xichen96]

Can you link all short-term fix PRs here?

These 2 PRs provide short term fix for the problem.

#10375
#10478

[Blueve]

Please go to the release planning

What do you mean the release planning?
The issue here is to track effort on long-term fix solution.