samples: Change samples to sample

Some names of the testcases samples do not start with "sample".
These testcases rename from "samples" to "sample".

Signed-off-by: Katarzyna Giadla <katarzyna.giadla@nordicsemi.no>

Author: katgiadla

samples/app_event_manager/sample.yaml

@@ -3,21 +3,21 @@ sample:
   name: Application Event Manager sample
 common:
   harness: console
-  integration_platforms:
-    - qemu_cortex_m3
-    - nrf52dk_nrf52832
-    - nrf52840dk_nrf52840
-    - nrf9160dk_nrf9160_ns
-    - nrf21540dk_nrf52840
   harness_config:
-    type: multi_line
     ordered: false
     regex:
       - "config_event"
       - "measurement_event"
       - "control_event"
       - "ack_event"
       - "Average value3: 45"
+    type: multi_line
+  integration_platforms:
+    - qemu_cortex_m3
+    - nrf52dk_nrf52832
+    - nrf52840dk_nrf52840
+    - nrf9160dk_nrf9160_ns
+    - nrf21540dk_nrf52840
 tests:
-  samples.app_event_manager:
+  sample.app_event_manager:
     build_only: false

samples/app_event_manager_profiler_tracer/sample.yaml

@@ -2,7 +2,7 @@ sample:
   description: Sample showing usage of profiling Application Event Manager events
   name: Application Event Manager profiler tracer sample
 tests:
-  samples.app_event_manager_profiler_tracer:
+  sample.app_event_manager_profiler_tracer:
     build_only: true
     integration_platforms:
       - nrf52dk_nrf52832