cherry pick of #145: fix file:/ with local tarball (#157)

* add test with the bug to fix

* go.mod & go.sum

* fix file:/ with local tarball

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/Azure/go-autorest/autorest v0.9.1 // indirect
 	github.com/Azure/go-autorest/autorest/adal v0.6.0 // indirect
 	github.com/MakeNowJust/heredoc v1.0.0 // indirect
+	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/Sirupsen/logrus v0.0.0-00010101000000-000000000000 // indirect
 	github.com/aws/aws-sdk-go v1.15.78
 	github.com/cenkalti/backoff v2.2.1+incompatible
@@ -15,18 +16,24 @@ require (
 	github.com/fatih/color v1.7.0
 	github.com/ghodss/yaml v1.0.0
 	github.com/go-kit/kit v0.8.0
+	github.com/go-openapi/jsonpointer v0.19.2 // indirect
+	github.com/go-openapi/jsonreference v0.18.0 // indirect
+	github.com/go-openapi/swag v0.19.2 // indirect
 	github.com/gogo/protobuf v1.2.1
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/golang/protobuf v1.3.1
 	github.com/google/go-cmp v0.3.0
 	github.com/hashicorp/go-getter v1.0.2
 	github.com/imdario/mergo v0.3.7
-	github.com/kubeflow/kfctl/v3 v3.0.0-20190917231916-6ebaf60b014a
+	github.com/kr/pty v1.1.3 // indirect
 	github.com/onrik/logrus v0.2.1
 	github.com/otiai10/copy v1.0.1
+	github.com/otiai10/curr v0.0.0-20190513014714-f5a3d24e5776 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/client_golang v0.9.2
+	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 // indirect
 	github.com/prometheus/common v0.2.0
+	github.com/prometheus/procfs v0.0.0-20190219184716-e4d4a2206da0 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/afero v1.2.2
 	github.com/spf13/cobra v0.0.3