Add test to make sure /dev/shm is shared between containers in CRI-O

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

test/shm.bats

@@ -0,0 +1,40 @@
+#!/usr/bin/env bats
+
+load helpers
+
+function teardown() {
+	cleanup_test
+}
+
+@test "ctr check shared /dev/shm" {
+	start_crio
+	run crictl runp "$TESTDATA"/sandbox_config.json
+	echo "$output"
+	[ "$status" -eq 0 ]
+	pod_id="$output"
+	run crictl create "$pod_id" "$TESTDIR"/container_sleep.json "$TESTDATA"/sandbox_config.json
+	echo "$output"
+	[ "$status" -eq 0 ]
+	ctr_id="$output"
+	run crictl start "$ctr_id"
+	echo "$output"
+	[ "$status" -eq 0 ]
+	run crictl exec --sync "$ctr_id" "touch /dev/shm/testdata"
+	echo "$output"
+	[ "$status" -eq 0 ]
+
+	run crictl create "$pod_id" "$TESTDIR"/container_redis.json "$TESTDATA"/sandbox_config.json
+	echo "$output"
+	[ "$status" -eq 0 ]
+	ctr_id="$output"
+	run crictl start "$ctr_id"
+	echo "$output"
+	[ "$status" -eq 0 ]
+	run crictl exec --sync "$ctr_id" "ls /dev/shm/testdata"
+	echo "$output"
+	[ "$status" -eq 0 ]
+
+	cleanup_ctrs
+	cleanup_pods
+	stop_crio
+}

test/testdata/container_sleep.json

@@ -0,0 +1,56 @@
+{
+	"metadata": {
+		"name": "podsandbox-sleep"
+	},
+	"image": {
+		"image": "quay.io/crio/redis:alpine"
+	},
+	"command": [
+		  "/bin/sleep", "6000"
+	],
+	"args": [
+                "6000"
+	],
+	"working_dir": "/",
+	"envs": [
+		{
+			"key": "PATH",
+			"value": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+		},
+		{
+			"key": "TERM",
+			"value": "xterm"
+		},
+		{
+			"key": "REDIS_VERSION",
+			"value": "3.2.3"
+		},
+		{
+			"key": "REDIS_DOWNLOAD_URL",
+			"value": "http://download.redis.io/releases/redis-3.2.3.tar.gz"
+		},
+		{
+			"key": "REDIS_DOWNLOAD_SHA1",
+			"value": "92d6d93ef2efc91e595c8bf578bf72baff397507"
+		}
+	],
+	"labels": {
+		"tier": "backend"
+	},
+	"annotations": {
+		"pod": "podsandbox1"
+	},
+	"readonly_rootfs": false,
+	"log_path": "",
+	"stdin": false,
+	"stdin_once": false,
+	"tty": false,
+	"linux": {
+		"resources": {
+			"cpu_period": 10000,
+			"cpu_quota": 20000,
+			"cpu_shares": 512,
+			"oom_score_adj": 30
+		},
+	}
+}