VOL-381 add unum container to support ONOS cluster formation under swarm

Change-Id: Ic260edda19bb199ed040f05164ab605f28c919d0
diff --git a/unum/vendor/github.com/docker/go-connections/tlsconfig/certpool_other.go b/unum/vendor/github.com/docker/go-connections/tlsconfig/certpool_other.go
new file mode 100644
index 0000000..9ca9745
--- /dev/null
+++ b/unum/vendor/github.com/docker/go-connections/tlsconfig/certpool_other.go
@@ -0,0 +1,14 @@
+// +build !go1.7
+
+package tlsconfig
+
+import (
+	"crypto/x509"
+
+)
+
+// SystemCertPool returns an new empty cert pool,
+// accessing system cert pool is supported in go 1.7
+func SystemCertPool() (*x509.CertPool, error) {
+	return x509.NewCertPool(), nil
+}