add validator slashing single test

playbooks/dev/validator-slashing-single.yaml

@@ -0,0 +1,40 @@
+id: validator-slashing-single
+name: "Validator Slashing Single"
+timeout: 1h
+config:
+  validatorMnemonic: "giant issue aisle success illegal bike spike question tent bar rely arctic volcano long crawl hungry vocal artwork sniff fantasy very lucky have athlete"
+  validatorIndex: 0
+  validatorCount: 1
+tasks:
+- name: check_clients_are_healthy
+  title: "Check if at least one client is ready"
+  timeout: 5m
+  config:
+    minClientCount: 1
+- name: check_consensus_slot_range
+  title: "Wait for epoch >= 4"
+  timeout: 1h  # 4 epochs = ~0.5h
+  config:
+    minEpochNumber: 4
+
+- name: run_task_background
+  title: "Generate & send proposer slashing"
+  config:
+    onBackgroundComplete: "fail"
+    backgroundTask:
+      name: generate_slashings
+      title: "Generate 1 proposer slashing per slot"
+      config:
+        slashingType: "proposer"
+        limitPerSlot: 1
+      configVars:
+        mnemonic: "validatorMnemonic"
+        startIndex: "validatorIndex"
+        limitTotal: "validatorCount"
+        indexCount: "validatorCount"
+
+    foregroundTask:
+      name: check_consensus_block_proposals
+      title: "Wait for block proposal with proposer slashings"
+      config:
+        minProposerSlashingCount: 1