Platform test setting the port of all services to the same value

[farshidtz]

edgex-snap-testing/test/suites/edgexfoundry/main_test.go

Lines 72 to 73 in d61a564

	TestGlobalConfig: true,
	TestMixedGlobalAppConfig: utils.FullConfigTest,

These should be set to false or removed in favor of another custom test that doesn't mess with a port globally.

[MonicaisHer]

edgexfoundry's global and mixed config options could still be tested by changing service-startupmsg or writable-loglevel instead.

[farshidtz]

I suggest setting service-startupmsg because not all services write debug logs. Setting a value such as snap-testing can be easily checked in output logs.

We may need to "wait" for the message to appear, by querying the logs periodically, or following them and exiting once the message is there (with a timeout).