register libnetwork API and UI with docker parent chain

This commit also brings in the ability to specify a default network and its
corresponding driver as daemon flags. This helps in existing clients to
make use of newer networking features provided by libnetwork.

Signed-off-by: Madhu Venugopal <madhu@docker.com>

integration-cli/docker_cli_network_test.go

@@ -0,0 +1,54 @@
+// +build experimental
+
+package main
+
+import (
+	"os/exec"
+	"strings"
+
+	"github.com/go-check/check"
+)
+
+func isNetworkPresent(c *check.C, name string) bool {
+	runCmd := exec.Command(dockerBinary, "network", "ls")
+	out, _, _, err := runCommandWithStdoutStderr(runCmd)
+	if err != nil {
+		c.Fatal(out, err)
+	}
+	lines := strings.Split(out, "\n")
+	for i := 1; i < len(lines)-1; i++ {
+		if strings.Contains(lines[i], name) {
+			return true
+		}
+	}
+	return false
+}
+
+func (s *DockerSuite) TestDockerNetworkLsDefault(c *check.C) {
+	defaults := []string{"bridge", "host", "none"}
+	for _, nn := range defaults {
+		if !isNetworkPresent(c, nn) {
+			c.Fatalf("Missing Default network : %s", nn)
+		}
+	}
+}
+
+func (s *DockerSuite) TestDockerNetworkCreateDelete(c *check.C) {
+	runCmd := exec.Command(dockerBinary, "network", "create", "test")
+	out, _, _, err := runCommandWithStdoutStderr(runCmd)
+	if err != nil {
+		c.Fatal(out, err)
+	}
+	if !isNetworkPresent(c, "test") {
+		c.Fatalf("Network test not found")
+	}
+
+	runCmd = exec.Command(dockerBinary, "network", "rm", "test")
+	out, _, _, err = runCommandWithStdoutStderr(runCmd)
+	if err != nil {
+		c.Fatal(out, err)
+	}
+	if isNetworkPresent(c, "test") {
+		c.Fatalf("Network test is not removed")
+	}
+}