rootless: support `podman network create` (CNI-in-slirp4netns)

Usage:
```
$ podman network create foo
$ podman run -d --name web --hostname web --network foo nginx:alpine
$ podman run --rm --network foo alpine wget -O - http://web.dns.podman
Connecting to web.dns.podman (10.88.4.6:80)
...
<h1>Welcome to nginx!</h1>
...
```

See contrib/rootless-cni-infra for the design.

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

1 files changed, 6 insertions, 0 deletions

diff --git a/test/e2e/common_test.go b/test/e2e/common_test.go
index ed55484e3..b6bbae15b 100644
--- a/test/e2e/common_test.go
+++ b/test/e2e/common_test.go
@@ -245,6 +245,12 @@ func PodmanTestCreateUtil(tempDir string, remote bool) *PodmanTestIntegration {
 	}
 	os.Setenv("DISABLE_HC_SYSTEMD", "true")
 	CNIConfigDir := "/etc/cni/net.d"
+	if rootless.IsRootless() {
+		CNIConfigDir = filepath.Join(os.Getenv("HOME"), ".config/cni/net.d")
+	}
+	if err := os.MkdirAll(CNIConfigDir, 0755); err != nil {
+		panic(err)
+	}
 
 	storageFs := STORAGE_FS
 	if rootless.IsRootless() {