chore: Expanding linting to cover testing

Author: yhakbar

Makefile

@@ -10,6 +10,6 @@ lint:
 	golangci-lint run ./...
 
 lint-allow-list:
-	golangci-lint run ./modules/random/...
+	golangci-lint run ./modules/random/... ./modules/testing/...
 
 .PHONY: lint update-lint-config

modules/testing/types.go

@@ -1,11 +1,12 @@
+// Package testing provides the TestingT interface used throughout Terratest.
 package testing
 
 // TestingT is an interface that describes the implementation of the testing object
 // that the majority of Terratest functions accept as first argument.
 // Using an interface that describes testing.T instead of the actual implementation
 // makes terratest usable in a wider variety of contexts (e.g. use with ginkgo : https://godoc.org/github.com/onsi/ginkgo#GinkgoT)
 type TestingT interface {
-	//Fail marks the function as having failed but continues execution.
+	// Fail marks the function as having failed but continues execution.
 	Fail()
 	// FailNow marks the function as having failed and stops its execution
 	// by calling runtime.Goexit (which then runs all deferred calls in the