remove terraform plan set use -auto-apply

It is faster to use just auto apply then in two steps plan and apply.
Apply starts immediately after planning in auto apply. There are few
seconds of lag when we have two separate commands.

node/terraform/terraform.go

@@ -116,9 +116,6 @@ func (t *Terraform) initPlanApply(destroy bool) error {
 	if err := t.init(); err != nil {
 		return err
 	}
-	if err := t.plan(destroy); err != nil {
-		return err
-	}
 	if err := t.apply(destroy); err != nil {
 		return err
 	}
@@ -136,20 +133,11 @@ func (t *Terraform) init() error {
 	return nil
 }
 
-func (t *Terraform) plan(destroy bool) error {
-	args := []string{"terraform", "plan", "-no-color", "-input=false", "-out=tfplan", "-compact-warnings"}
-	if destroy {
-		args = append(args, "-destroy")
-	}
-	return t.shellExecDefault(args)
-}
-
 func (t *Terraform) apply(destroy bool) error {
-	args := []string{"terraform", "apply", "-no-color", "-input=false", "-compact-warnings"}
+	args := []string{"terraform", "apply", "-no-color", "-input=false", "-compact-warnings", "-auto-approve"}
 	if destroy {
 		args = append(args, "-destroy")
 	}
-	args = append(args, "tfplan")
 	opt := t.shellExecOpts(logPrefix, args)
 	opt.ErrorsMap = map[string]error{
 		"ConflictException: Unable to complete operation due to concurrent modification. Please try again later.": conflictException,