feat(validation): check the contents of a raw option that holds a dict or list

tests/inputs/inputs_fixtures.yml

@@ -39,7 +39,7 @@ inputs_fixtures:
     value:
       name: web01
       userz: {}
-    expect: ["fixture.userz: unsupported key, fixture accepts count, disks, enabled, kind, name, secret, servers, users"]
+    expect: ["fixture.userz: unsupported key, fixture accepts count, disks, enabled, gate, kind, name, secret, servers, users"]
 
   - name: wrong-element-type
     value:
@@ -84,5 +84,21 @@ inputs_fixtures:
       enabled: "true"
       userz: {}
     expect:
-      - "fixture.userz: unsupported key, fixture accepts count, disks, enabled, kind, name, secret, servers, users"
+      - "fixture.userz: unsupported key, fixture accepts count, disks, enabled, gate, kind, name, secret, servers, users"
       - "fixture.enabled: expected bool, got str"
+
+  - name: raw-gate-false
+    value:
+      name: web01
+      gate: false
+    expect: []
+
+  - name: raw-gate-dict-checked
+    value:
+      name: web01
+      gate:
+        port: http
+        portz: 1
+    expect:
+      - "fixture.gate.portz: unsupported key, fixture.gate accepts port"
+      - "fixture.gate.port: expected int, got str"