tests: Add yum to package_manager tests

This will check that is possible to perform a yum update inside a container.

Fixes kata-containers#65

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

integration/docker/docker.go

@@ -32,6 +32,9 @@ const (
 
 	// FedoraImage is the fedora image
 	FedoraImage = "fedora"
+
+	// CentosImage is the centos image
+	CentosImage = "centos"
 )
 
 func runDockerCommandWithTimeout(timeout time.Duration, command string, args ...string) (string, string, int) {

integration/docker/main_test.go

@@ -29,6 +29,7 @@ func TestIntegration(t *testing.T) {
 		PostgresImage,
 		DebianImage,
 		FedoraImage,
+		CentosImage,
 	}
 
 	for _, i := range images {

integration/docker/package_manager_test.go

@@ -60,4 +60,12 @@ var _ = Describe("package manager update test", func() {
 			Expect(RemoveDockerContainer(id)).To(BeTrue())
 		})
 	})
+
+	Context("check yum update", func() {
+		It("should not fail", func() {
+			args = append(args, "--rm", "--name", id, CentosImage, "yum", "-y", "update")
+			_, _, exitCode := dockerRun(args...)
+			Expect(exitCode).To(BeZero())
+		})
+	})
 })