Duplicate code in load

[willsmile]

The following function have similar processes.

// LoadPlan uses for loading a test plan from a JSON file
func LoadPlan(path string) Plan {
	var plan Plan

	raw, error := ioutil.ReadFile(path)
	if error != nil {
		log.Fatal("[File Loading Error] ", error)
		os.Exit(1)
	}

	json.Unmarshal(raw, &plan)

	return plan
}

// LoadAPIStore uses for loading APIStore from a JSON file
func LoadAPIStore(path string) APIStore {
	var store APIStore

	raw, error := ioutil.ReadFile(path)
	if error != nil {
		log.Fatal("[File Loading Error] ", error)
		os.Exit(1)
	}

	json.Unmarshal(raw, &store)

	return store
}

[willsmile]

Duplicate but necessary