samples: net: Enable Wireguard VPN compilation in tests

Add a test that enables Wireguard VPN compilation so that
we at least compile test the code.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

samples/net/sockets/echo_client/sample.yaml

@@ -111,3 +111,9 @@ tests:
   sample.net.sockets.echo_client.802154.subg:
     extra_args: EXTRA_CONF_FILE="overlay-802154-subg.conf"
     platform_allow: beagleconnect_freedom
+  sample.net.sockets.echo_client.vpn:
+    platform_allow:
+      - native_sim
+      - native_sim/native/64
+    extra_args:
+      - EXTRA_CONF_FILE="overlay-vpn.conf"

samples/net/sockets/echo_server/sample.yaml

@@ -153,3 +153,9 @@ tests:
       - native_sim/native/64
     extra_args:
       - EXTRA_CONF_FILE="overlay-ws-console.conf"
+  sample.net.sockets.echo_server.vpn:
+    platform_allow:
+      - native_sim
+      - native_sim/native/64
+    extra_args:
+      - EXTRA_CONF_FILE="overlay-vpn.conf"

samples/net/sockets/http_server/sample.yaml

@@ -18,3 +18,9 @@ tests:
   sample.net.sockets.http.server: {}
   sample.net.sockets.https.server:
     extra_args: EXTRA_CONF_FILE="overlay-tls.conf"
+  sample.net.sockets.http_server.vpn:
+    platform_allow:
+      - native_sim
+      - native_sim/native/64
+    extra_args:
+      - EXTRA_CONF_FILE="overlay-vpn.conf"