[nrf fromtree] tests: net: lib: mqtt: v3_1_1: Add test variant with MQTT 5.0 enabled

Add test variant which enables MQTT 5.0 support. MQTT 3.1.1 should still
work just fine in such case, so it needs to be verified that's the case.

Signed-off-by: Robert Lubos <[email protected]>
(cherry picked from commit 08f8e2f)

Author: rlubos

tests/net/lib/mqtt/v3_1_1/mqtt_client/prj.conf

@@ -16,6 +16,7 @@ CONFIG_NET_PKT_RX_COUNT=16
 CONFIG_NET_TCP=y
 CONFIG_NET_TCP_TIME_WAIT_DELAY=0
 CONFIG_MQTT_LIB=y
+CONFIG_MQTT_VERSION_3_1_1=y
 
 CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_ZTEST_STACK_SIZE=2048

tests/net/lib/mqtt/v3_1_1/mqtt_client/testcase.yaml

@@ -11,3 +11,6 @@ tests:
   net.mqtt.client.preempt:
     extra_configs:
       - CONFIG_NET_TC_THREAD_PREEMPTIVE=y
+  net.mqtt.client.mqtt_5_0:
+    extra_configs:
+      - CONFIG_MQTT_VERSION_5_0=y

tests/net/lib/mqtt/v3_1_1/mqtt_packet/prj.conf

@@ -8,6 +8,7 @@ CONFIG_TEST_RANDOM_GENERATOR=y
 
 # enable the MQTT lib
 CONFIG_MQTT_LIB=y
+CONFIG_MQTT_VERSION_3_1_1=y
 CONFIG_ZTEST=y
 CONFIG_TEST_USERSPACE=y
 CONFIG_MAIN_STACK_SIZE=1280

tests/net/lib/mqtt/v3_1_1/mqtt_packet/testcase.yaml

@@ -1,9 +1,12 @@
 common:
+  tags:
+    - mqtt
+    - net
+    - userspace
+  min_ram: 16
   depends_on: netif
 tests:
-  net.mqtt.packet:
-    min_ram: 16
-    tags:
-      - mqtt
-      - net
-      - userspace
+  net.mqtt.packet: {}
+  net.mqtt.packet.mqtt_5_0:
+    extra_configs:
+      - CONFIG_MQTT_VERSION_5_0=y