Increase the timeout for Podman tests to an arbitrary value of 10s

Some tests did not pass because the Podman client did not
initialize in 1s; I guess because we are running a lot of Podman commands in parallel?
This should hopefully improve this situation.

tests/helper/helper_generic.go

@@ -214,6 +214,16 @@ func CommonBeforeEach() CommonVar {
 		os.Setenv("KUBECONFIG", kubeconfig.Name())
 
 		if NeedsPodman(specLabels) {
+			originalPodmanCmdInitTimeout, present := os.LookupEnv("PODMAN_CMD_INIT_TIMEOUT")
+			DeferCleanup(func() {
+				if present {
+					Expect(os.Setenv("PODMAN_CMD_INIT_TIMEOUT", originalPodmanCmdInitTimeout))
+				} else {
+					Expect(os.Unsetenv("PODMAN_CMD_INIT_TIMEOUT")).ShouldNot(HaveOccurred())
+				}
+			})
+			Expect(os.Setenv("PODMAN_CMD_INIT_TIMEOUT", "10s")).ShouldNot(HaveOccurred())
+
 			// Generate a dedicated containers.conf with a specific namespace
 			GenerateAndSetContainersConf(commonVar.ConfigDir)
 		}

tests/integration/cmd_dev_test.go

@@ -109,7 +109,10 @@ echo "$@"
 			devSession, _, stderrBytes, _, err = helper.StartDevMode(helper.DevSessionOpts{
 				RunOnPodman: false,
 				CmdlineArgs: []string{"-v", "3"},
-				EnvVars:     []string{"PODMAN_CMD=" + delayer},
+				EnvVars: []string{
+					"PODMAN_CMD=" + delayer,
+					"PODMAN_CMD_INIT_TIMEOUT=1s",
+				},
 			})
 			Expect(err).ShouldNot(HaveOccurred())
 			defer devSession.Kill()