test/e2e: do not try to use docker as rootless

Running these locally always created a popup to ask me for my password
as I am in the wheel group.
I would also argue that such a test should not be run on any local
system ever even as root. First docker could be a symlink to podman so
the check if the image is there would fail. Second starting the docker
deamon in a podman test suite just feels very unexpected.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

test/e2e/push_test.go

@@ -342,6 +342,7 @@ var _ = Describe("Podman push", func() {
 
 	It("podman push to docker daemon", func() {
 		SkipIfRemote("Remote push does not support docker-daemon transport")
+		SkipIfRootless("rootless user has no permission to use default docker.sock")
 		setup := SystemExec("bash", []string{"-c", "systemctl status docker 2>&1"})
 
 		if setup.LineInOutputContains("Active: inactive") {