Supported added for reterving Plugin list for Network and Volume.

Also, plugin information in docker info output.

Signed-off-by: Kunal Kushwaha <kushwaha_kunal_v7@lab.ntt.co.jp>
Upstream-commit: aa7fd884e609d3d13df628600a1799e0e76444e9
Component: engine

components/engine/integration-cli/docker_cli_info_test.go

@@ -25,6 +25,8 @@ func (s *DockerSuite) TestInfoEnsureSucceeds(c *check.C) {
 		"Total Memory:",
 		"Kernel Version:",
 		"Storage Driver:",
+		"Volume:",
+		"Network:",
 	}
 
 	if utils.ExperimentalBuild() {