use default namespace when checking network connections

src/warnet/bitcoin.py

@@ -10,7 +10,7 @@
 from test_framework.messages import ser_uint256
 from test_framework.p2p import MESSAGEMAP
 
-from .k8s import get_mission
+from .k8s import get_default_namespace, get_mission
 from .process import run_command
 
 
@@ -38,10 +38,11 @@ def rpc(tank: str, method: str, params: str):
 def _rpc(tank: str, method: str, params: str):
     # bitcoin-cli should be able to read bitcoin.conf inside the container
     # so no extra args like port, chain, username or password are needed
+    namespace = get_default_namespace()
     if params:
-        cmd = f"kubectl exec {tank} -- bitcoin-cli {method} {' '.join(map(str, params))}"
+        cmd = f"kubectl -n {namespace} exec {tank} -- bitcoin-cli {method} {' '.join(map(str, params))}"
     else:
-        cmd = f"kubectl exec {tank} -- bitcoin-cli {method}"
+        cmd = f"kubectl -n {namespace} exec {tank} -- bitcoin-cli {method}"
     return run_command(cmd)