api29 emulator is not recognized as latest

[dtopuzov]

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 6.3.1
• Cross-platform modules: ~6.3.0
• Android Runtime: 6.3.0
• iOS Runtime: 6.3.0
• Plugin(s): No

Describe the bug
api29 emulator is not recognized as latest.

To Reproduce

• Install api27,api28, api29 emulators
• tns run android -> it starts api28 emulator.

Expected behavior

• api29 emulator is started