tests: Move ports/esp32/resolve_on_connect.py to net_inet.

The main reason for moving this test is that it needs internet connection
to pass.  So putting it in `net_inet` makes sure it's alongside other tests
that need the internet.

Also, it's a general test that could eventually run on other ports, if/when
they support doing an address resolution as part of `socket.connect()`.

Signed-off-by: Damien George <damien@micropython.org>

tests/net_inet/resolve_on_connect.py

@@ -1,11 +1,13 @@
-# Test that the esp32's socket module performs DNS resolutions on bind and connect
+# Test that the socket module performs DNS resolutions on bind and connect.
+# Currenty only the esp32 port does this, so the test is restricted to that port.
+
 import sys
 
 if sys.implementation.name == "micropython" and sys.platform != "esp32":
     print("SKIP")
     raise SystemExit
 
-import socket, sys
+import socket
 
 
 def test_bind_resolves_0_0_0_0():