vendor: initial vendor

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/docker/cli/cli-plugins/manager/suffix_unix.go

@@ -0,0 +1,10 @@
+// +build !windows
+
+package manager
+
+func trimExeSuffix(s string) (string, error) {
+	return s, nil
+}
+func addExeSuffix(s string) string {
+	return s
+}