fix TestPidsSystemd and TestRunWithKernelMemorySystemd test error

Signed-off-by: Xiaodong Liu <[email protected]>

.travis.yml

@@ -43,10 +43,7 @@ matrix:
       script:
         # kernel 3.10 (frankenized), systemd 219
         - sudo ssh default 'rpm -q centos-release kernel systemd'
-        # FIXME: the following unit tests are skipped (TESTFLAGS=-short):
-        #        FAIL: TestPidsSystemd: utils_test.go:55: exec_test.go:630: unexpected error: container_linux.go:353: starting container process caused: process_linux.go:326: applying cgroup configuration for process caused: mountpoint for devices not found
-        #        FAIL: TestRunWithKernelMemorySystemd: exec_test.go:713: runContainer failed with kernel memory limit: container_linux.go:353: starting container process caused: process_linux.go:326: applying cgroup configuration for process caused: mkdir : no such file or directory
-        - sudo ssh default -t 'sudo -i make -C /vagrant localunittest TESTFLAGS=-short'
+        - sudo ssh default -t 'sudo -i make -C /vagrant localunittest'
         - sudo ssh default -t 'sudo -i make -C /vagrant localintegration'
         - sudo ssh default -t 'sudo -i make -C /vagrant localintegration RUNC_USE_SYSTEMD=1'
         # FIXME: rootless is skipped because of EPERM on writing cgroup.procs

libcontainer/integration/template_test.go

@@ -117,7 +117,7 @@ func newTemplateConfig(rootfs string) *configs.Config {
 			{Type: configs.NEWNET},
 		}),
 		Cgroups: &configs.Cgroup{
-			Path: "integration/test",
+			Path: "/sys/fs/cgroup/",
 			Resources: &configs.Resources{
 				MemorySwappiness: nil,
 				Devices:          allowedDevices,