Change journal query to use the unit

[farshidtz]

matter-snap-testing/test/utils/snap.go

Lines 122 to 124 in 2c1ee1c

	return fmt.Sprintf("sudo journalctl --since \"%s\" --no-pager | grep \"%s\"|| true",
	start.Format("2006-01-02 15:04:05"),
	name)

can be changed to query based on the unit (-u snap.%s.*) instead of filtering.

[farshidtz]

This is often polluted with systemd status messages. Using the identifier i.e. app's name gives a better output, but it requires changing the function signature to pass app's name.