improve nodeinfo

- enable usage outside of secure-node.nix
- use json as the output format
- show ports
- also show local addresses, which is particularly useful when
  netns-isolation is enabled
- only show enabled services

test/tests.py

@@ -216,6 +216,16 @@ def _():
     )
 
 
+@test("nodeinfo")
+def _():
+    status, _ = machine.execute("systemctl is-enabled --quiet onion-addresses 2> /dev/null")
+    if status == 0:
+        machine.wait_for_unit("onion-addresses")
+    json_info = succeed("sudo -u operator nodeinfo")
+    info = json.loads(json_info)
+    assert info["bitcoind"]["local_address"]
+
+
 @test("secure-node")
 def _():
     assert_running("onion-addresses")