testmap: Enable cockpit-podman on RHEL 10

We are over the initial "everything is broken" hump, and start to
regularly land our releases in RHEL 10. Let's shift left the gating
failures.

lib/testmap.py

@@ -110,6 +110,7 @@ def contexts(image: str, *scenarios: Iterable[str], repo: str | None = None) ->
             'rhel-8-10',
             'rhel-9-4',
             'rhel-9-5',
+            'rhel-10-0',
             'rhel4edge',
             'ubuntu-2204',
             'ubuntu-stable',
@@ -118,7 +119,6 @@ def contexts(image: str, *scenarios: Iterable[str], repo: str | None = None) ->
             'centos-10',
             'fedora-rawhide',
             'opensuse-tumbleweed',
-            'rhel-10-0',
         ],
     },
     'cockpit-project/cockpit-machines': {