Switch WiFi AP tests to run on APT

This set of tests ensures that Apertis has the support for different type
of WiFi configuration. Since our OSTree image are not shipped with hostapd
enabled a set of configurations are required to properly setup the AP.

While this is possible to in OSTree images, it is easier to do it on APT
images. Moreover, the test seems to be designed to run on APT images as
it tries to create files on a read-only file system.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

test-cases/wifi-wpa2-psk-accesspoint-setup.yaml

@@ -4,7 +4,7 @@ metadata:
   image-types:
     hmi: [ armhf ]
   image-deployment:
-    - OSTree
+    - APT
   type: functional
   exec-type: manual
   priority: critical

test-cases/wifi-wpa3-sae-accesspoint-setup.yaml

@@ -4,7 +4,7 @@ metadata:
   image-types:
     hmi: [ armhf ]
   image-deployment:
-    - OSTree
+    - APT
   type: functional
   exec-type: manual
   priority: critical

test-cases/wifi-wpa3-transition-mode-accesspoint-setup.yaml

@@ -4,7 +4,7 @@ metadata:
   image-types:
     hmi: [ armhf ]
   image-deployment:
-    - OSTree
+    - APT
   type: functional
   exec-type: manual
   priority: critical