Create not explicitly defined intentions banner

ui/packages/consul-ui/app/components/topology-metrics/notice/undefined-intention.hbs

@@ -0,0 +1,23 @@
+<Notice
+  class="topology-metrics-notice-wildcard-intention"
+  ...attributes
+  @type={{or @type "warning"}}
+as |notice|>
+    <notice.Header>
+    <h3>
+      {{t "components.consul.topology-metrics.notice.undefined-intention.header"}}
+    </h3>
+  </notice.Header>
+  <notice.Body>
+    <p>
+     {{t "components.consul.topology-metrics.notice.undefined-intention.body"}}
+    </p>
+  </notice.Body>
+  <notice.Footer>
+    <p>
+      <a href="{{env 'CONSUL_DOCS_URL'}}/connect/registration/service-registration#upstreams" rel="noopener noreferrer" target="_blank">
+        {{t "components.consul.topology-metrics.notice.undefined-intention.footer"}}
+      </a>
+    </p>
+  </notice.Footer>
+</Notice>

ui/packages/consul-ui/app/models/topology.js

@@ -1,4 +1,5 @@
 import Model, { attr } from '@ember-data/model';
+import { computed } from '@ember/object';
 
 export const PRIMARY_KEY = 'uid';
 export const SLUG_KEY = 'ServiceName';
@@ -17,4 +18,24 @@ export default class Topology extends Model {
   @attr() Upstreams; // Service[]
   @attr() Downstreams; // Service[],
   @attr() meta; // {}
+
+  @computed('Upstreams', 'Downstreams')
+  get undefinedIntention() {
+    let undefinedUpstream = false;
+    let undefinedDownstream = false;
+
+    undefinedUpstream =
+      this.Upstreams.filter(
+        item =>
+          item.Source === 'specific-intention' && !item.TransparentProxy && item.Intention.Allowed
+      ).length !== 0;
+
+    undefinedDownstream =
+      this.Downstreams.filter(
+        item =>
+          item.Source === 'specific-intention' && !item.TransparentProxy && item.Intention.Allowed
+      ).length !== 0;
+
+    return undefinedUpstream || undefinedDownstream;
+  }
 }

ui/packages/consul-ui/app/templates/dc/services/show/topology.hbs

@@ -31,6 +31,9 @@ as |route|>
       {{#if topology.WildcardIntention}}
         <TopologyMetrics::Notice::WildcardIntention />
       {{/if}}
+      {{#if topology.undefinedIntention}}
+        <TopologyMetrics::Notice::UndefinedIntention />
+      {{/if}}
       <TopologyMetrics
         @nspace={{nspace}}
         @dc={{dc.Name}}