use dep as denpendency managment tool

vendor/k8s.io/client-go/pkg/version/base.go

@@ -39,8 +39,8 @@ var (
 	// them irrelevant. (Next we'll take it out, which may muck with
 	// scripts consuming the kubectl version output - but most of
 	// these should be looking at gitVersion already anyways.)
-	gitMajor string = "1" // major version, always numeric
-	gitMinor string = "8" // minor version, numeric possibly followed by "+"
+	gitMajor string = "" // major version, always numeric
+	gitMinor string = "" // minor version, numeric possibly followed by "+"
 
 	// semantic version, derived by build scripts (see
 	// https://github.com/kubernetes/kubernetes/blob/master/docs/design/versioning.md
@@ -51,9 +51,13 @@ var (
 	// semantic version is a git hash, but the version itself is no
 	// longer the direct output of "git describe", but a slight
 	// translation to be semver compliant.
-	gitVersion   string = "v1.8.0+$Format:%h$"
-	gitCommit    string = "$Format:%H$"    // sha1 from git, output of $(git rev-parse HEAD)
-	gitTreeState string = "not a git tree" // state of git tree, either "clean" or "dirty"
+
+	// NOTE: The $Format strings are replaced during 'git archive' thanks to the
+	// companion .gitattributes file containing 'export-subst' in this same
+	// directory.  See also https://git-scm.com/docs/gitattributes
+	gitVersion   string = "v0.0.0-master+$Format:%h$"
+	gitCommit    string = "$Format:%H$" // sha1 from git, output of $(git rev-parse HEAD)
+	gitTreeState string = ""            // state of git tree, either "clean" or "dirty"
 
 	buildDate string = "1970-01-01T00:00:00Z" // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
 )