Running InitAndPlanE will always update modules

[alan2wong]

The Terraform Options struct includes the option to disable upgrading during terraform init, but even if this is set to false, an upgrade still occurs due to terraform get -upgrade always being called during InitAndPlanE:

• InitAndPlanE calls both InitE and GetE:

  terratest/modules/terraform/plan.go

  Lines 19 to 29 in adca4a8

  	func InitAndPlanE(t testing.TestingT, options *Options) (string, error) {
  	if _, err := InitE(t, options); err != nil {
  	return "", err
  	}
  	if _, err := GetE(t, options); err != nil {
  	return "", err
  	}
  	return PlanE(t, options)
  	}

• GetE is set to always call terraform get -update which forces an update:

  terratest/modules/terraform/get.go

  Lines 17 to 19 in adca4a8

  	func GetE(t testing.TestingT, options *Options) (string, error) {
  	return RunTerraformCommandE(t, options, "get", "-update")
  	}

The expected behavior is if Upgrade is set to false or not set, no upgrade should be run by either init or get.

[yorinasub17]

This is now fixed in https://github.com/gruntwork-io/terratest/releases/tag/v0.34.1, where the call to get is removed.