netns test: connect from main netns

All services are reachable from the main netns, no need to enter
service network namespaces.

This allows us to remove extra_tests.

test/scenarios/default.py

@@ -1,56 +1,5 @@
-def electrs():
-    machine.wait_for_open_port(4224)  # prometeus metrics provider
-
-
-def nbxplorer():
-    machine.wait_for_open_port(24444)
-
-
-def btcpayserver():
-    machine.wait_for_open_port(23000)
-    # test lnd custom macaroon
-    assert_matches(
-        'sudo -u btcpayserver curl -s --cacert /secrets/lnd-cert --header "Grpc-Metadata-macaroon: $(xxd -ps -u -c 1000 /run/lnd/btcpayserver.macaroon)" -X GET https://127.0.0.1:8080/v1/getinfo | jq',
-        '"version"',
-    )
-
-
-def spark_wallet():
-    machine.wait_for_open_port(9737)
-    spark_auth = re.search("login=(.*)", succeed("cat /secrets/spark-wallet-login"))[1]
-    assert_matches(f"curl -s {spark_auth}@localhost:9737", "Spark")
-
-
-def lightning_charge():
-    machine.wait_for_open_port(9112)
-    charge_auth = re.search("API_TOKEN=(.*)", succeed("cat /secrets/lightning-charge-env"))[1]
-    assert_matches(f"curl -s api-token:{charge_auth}@localhost:9112/info | jq", '"id"')
-
-
-def nanopos():
-    machine.wait_for_open_port(9116)
-    assert_matches("curl localhost:9116", "tshirt")
-
-
-def web_index():
-    machine.wait_for_open_port(80)
-    assert_matches("curl localhost", "nix-bitcoin")
-    assert_matches("curl -L localhost/store", "tshirt")
-
-
 def prestop():
     pass
 
 
-extra_tests = {
-    "electrs": electrs,
-    "nbxplorer": nbxplorer,
-    "btcpayserver": btcpayserver,
-    "spark-wallet": spark_wallet,
-    "lightning-charge": lightning_charge,
-    "nanopos": nanopos,
-    "web-index": web_index,
-    "prestop": prestop,
-}
-
-run_tests(extra_tests)
+run_tests()