set resource requests and limits on tank object

tell k8s up front the min and max CPU, memory we want for a tank.
can be overriden from a graph file if a tank needs more/less

Author: josibake

src/warnet/backend/kubernetes_backend.py

@@ -406,6 +406,10 @@ def create_bitcoind_container(self, tank: Tank) -> client.V1Container:
                 privileged=True,
                 capabilities=client.V1Capabilities(add=["NET_ADMIN", "NET_RAW"]),
             ),
+            resources=client.V1ResourceRequirements(
+                requests=tank.resources["requests"],
+                limits=tank.resources["limits"],
+            ),
         )
         self.log.debug(
             f"Created bitcoind container for tank {tank.index} using {bitcoind_options=:}"

src/warnet/tank.py

@@ -46,6 +46,10 @@ def __init__(self, index: int, warnet):
         self.bitcoin_network = warnet.bitcoin_network
         self.version: str = ""
         self.image: str = ""
+        self.resources: dict = {
+            "requests": {"cpu": "500m", "memory": "500Mi"},
+            "limits": {"cpu": "1000m", "memory": "1500Mi"},
+        }
         self.bitcoin_config = ""
         self.netem = None
         self.exporter = False