fix(test-guest): refresh runtime setup state

Signed-off-by: Drew Newberry <anewberry@nvidia.com>

nix/test-guest/configuration/podman.yml

@@ -22,9 +22,11 @@
         update_cache: true
       when: ansible_facts.distribution == "Ubuntu"
 
-    - name: Install Podman
+    - name: Install Podman dependencies
       ansible.builtin.package:
-        name: podman
+        name:
+          - podman
+          - socat
         state: present
 
     - name: Enable the rootless Podman API socket

nix/test-guest/run.sh

@@ -425,6 +425,11 @@ else
 	echo "==> Reusing cached configuration: ${configurations[*]:-base image}"
 fi
 
+# Configuration may change the test user's groups. Close the SSH control
+# connection established before provisioning so subsequent commands start with
+# the guest's current credentials.
+ssh "${ssh_args[@]}" -O exit openshell@127.0.0.1 >/dev/null 2>&1 || true
+
 for package in "${packages[@]}"; do
 	package_name=$(basename "${package}")
 	if [[ ! ${package_name} =~ ^[A-Za-z0-9._+~-]+$ ]]; then