update docs to clarify how IP filtering works

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [{
+        "name": "repro",
+        "type": "go",
+        "request": "launch",
+        "program": "main.go",
+        "args": ["--egress-acl-file", "acl.yaml", "--config-file", "config.yaml"]
+    }
+    ]
+}

acl.yaml

@@ -0,0 +1,14 @@
+version: v1
+services:
+  - name: report-dummy-srv
+    project: security
+    action: enforce
+    allowed_domains: 
+      - stripe.com
+
+default: 
+    project: other
+    action: open
+
+global_deny_list:
+    - 93.184.216.34

config.yaml

@@ -0,0 +1,3 @@
+allow_missing_role: true
+statsd_address: 127.0.0.1:8200
+# deny_ranges: ["93.184.216.34/32"]