Apps cannot be registered if MaxSupportedProtocolVersion is set to 1

[jacobkeeler]

Bug Report

If MaxSupportedProtocolVersion=1 is set in the INI file, no apps are allowed to register. This is because Core returns UNSUPPORTED_VERSION to protocol v1 apps.

Minimum value for MaxSupportedProtocolVersion should be changed to 2, since Core does not support protocol v1.

Reproduction Steps

1. Set MaxSupportedProtocolVersion=1 in smartDeviceLink.ini
2. Start Core
3. Register App

Expected Behavior

App registers

Observed Behavior

App does not register

OS & Version Information

• OS/Version: Ubuntu 20.04
• SDL Core Version: master
• Testing Against: RPC Builder JS

[jacobkeeler]

Closed via #3801