UT update for MessageMeter
UT update for MessageMeter

	Reason: 1. Fixed 3 tests in messagemeter_test
		2. Messagemetter_test not have randomly crashes

AByzhynar/sdl_core,pkeb/sdl_core,BrandonHe/sdl_core,AByzhynar/sdl_core,smartdevicelink/sdl_core,pkeb/sdl_core,APCVSRepo/sdl_core,pkeb/sdl_core,pkeb/sdl_core,smartdevicelink/sdl_core,smartdevicelink/sdl_core,APCVSRepo/sdl_core,AByzhynar/sdl_core,AByzhynar/sdl_core,BrandonHe/sdl_core,pkeb/sdl_core,LuxoftAKutsan/sdl_core,APCVSRepo/sdl_core,JackLivio/sdl_core,LuxoftAKutsan/sdl_core,BrandonHe/sdl_core,LuxoftAKutsan/sdl_core,JackLivio/sdl_core,APCVSRepo/sdl_core,BrandonHe/sdl_core,smartdevicelink/sdl_core,LuxoftAKutsan/sdl_core,BrandonHe/sdl_core,JackLivio/sdl_core,JackLivio/sdl_core,LuxoftAKutsan/sdl_core,APCVSRepo/sdl_core,pkeb/sdl_core,JackLivio/sdl_core,AByzhynar/sdl_core,AByzhynar/sdl_core,JackLivio/sdl_core,LuxoftAKutsan/sdl_core,BrandonHe/sdl_core