tests: net: Exclude native_posix because of socket service

The native_posix board does not work well with eventfd so disable
it with tests that use socket service API.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>

tests/net/dhcpv4/client/testcase.yaml

@@ -3,6 +3,9 @@ common:
   tags:
     - net
     - dhcpv4
+  platform_exclude:
+    - native_posix/native/64
+    - native_posix
 tests:
   net.dhcpv4_client:
     extra_configs:

tests/net/ipv6/testcase.yaml

@@ -4,6 +4,9 @@ common:
     - ipv6
     - ipv6_pe
   depends_on: netif
+  platform_exclude:
+    - native_posix/native/64
+    - native_posix
 tests:
   net.ipv6:
     extra_configs:

tests/net/socket/getnameinfo/testcase.yaml

@@ -1,6 +1,9 @@
 common:
   depends_on: netif
   filter: CONFIG_FULL_LIBC_SUPPORTED
+  platform_exclude:
+    - native_posix
+    - native_posix/native/64
 tests:
   net.socket.get_name_info:
     min_ram: 21