nits: incorrect condition stmt for options.Excludes

[Shion1305]

In cmd/import.go, there is an implementation that checks whether Excludes options is specified.
The default value for options.Excludes is []string{} as you can see here:

terraformer/cmd/import.go

Lines 395 to 410 in a5b4b69

	func baseProviderFlags(flag *pflag.FlagSet, options *ImportOptions, sampleRes, sampleFilters string) {
	flag.BoolVarP(&options.Connect, "connect", "c", true, "")
	flag.BoolVarP(&options.Compact, "compact", "C", false, "")
	flag.StringSliceVarP(&options.Resources, "resources", "r", []string{}, sampleRes)
	flag.StringSliceVarP(&options.Excludes, "excludes", "x", []string{}, sampleRes)
	flag.StringVarP(&options.PathPattern, "path-pattern", "p", DefaultPathPattern, "{output}/{provider}/")
	flag.StringVarP(&options.PathOutput, "path-output", "o", DefaultPathOutput, "")
	flag.StringVarP(&options.State, "state", "s", DefaultState, "local or bucket")
	flag.StringVarP(&options.Bucket, "bucket", "b", "", "gs://terraform-state")
	flag.StringSliceVarP(&options.Filter, "filter", "f", []string{}, sampleFilters)
	flag.BoolVarP(&options.Verbose, "verbose", "v", false, "")
	flag.BoolVarP(&options.NoSort, "no-sort", "S", false, "set to disable sorting of HCL")
	flag.StringVarP(&options.Output, "output", "O", "hcl", "output format hcl or json")
	flag.IntVarP(&options.RetryCount, "retry-number", "n", 5, "number of retries to perform when refresh fails")
	flag.IntVarP(&options.RetrySleepMs, "retry-sleep-ms", "m", 300, "time in ms to sleep between retries")
	}

However, the condition statement for checking options.Excludes is if options.Excludes != nil.

terraformer/cmd/import.go

Line 127 in a5b4b69

if options.Excludes != nil {

As default value for options.Excludes is []string{}, this always results true.

This should be fixed as len(options.Excludes) > 0
This does not cause panic when option.Excludes is false as you can see here

You can see similar implementation here:

terraformer/cmd/provider_cmd_aws.go

Line 53 in ceb25e2

if len(options.Resources) > 0 { // don't import anything and potentially override global resources