Add the 'name' key to the IoT tests group

The group template was created after
9dc1fafa was merged, which removed all
instances of the 'name:' key. However, this turned out to break test
submission, which is why it was then reverted in
79a2b0df.

Unfortunately, I did not realize that the new IoT group was missing
this field, which means that 'name:' was never added back there and IoT
image test submission is broken.

https://phabricator.apertis.org/T8949



Signed-off-by: Ryan Gonzalez <ryan.gonzalez@collabora.com>

lava/group-iot-tpl.yaml

@@ -9,6 +9,7 @@ job_name: {{image_name}}-{{group}}
       timeout:
         minutes: 180
       namespace: system
+      name: {{group}}-tests
       definitions:
 {%- for test_name in tests %}
         - repository: https://gitlab.apertis.org/tests/apertis-test-cases.git