feat(docker): show docker pull rate limits (#4666)

* feat(dockerhub): introduce local status endpoint

* feat(proxy): rewrite request with dockerhub credentials

* feat(endpoint): check env type

* feat(endpoint): check for local endpoint

* feat(docker): introduce client side service to get limits

* feat(container): add info about rate limits in container

* feat(dockerhub): load rate limits just for specific endpoints

* feat(images): show specific dockerhub messages for admin

* feat(service-create): show docker rate limits

* feat(service-edit): show rate limit messages

* fix(images): fix loading of page

* refactor(images): move rate limits check to container

* feat(kubernetes): proxy agent requests

* feat(kubernetes/apps): show pull limits in application creation

* refactor(image-registry): move warning to end of field

* fix(image-registry): show right message for admin

* fix(images): silently fail when loading rate limits

* fix(kube/apps): use new rate limits comp

* fix(images): move rate warning to end

* fix(registry): move search to right place

* fix(service): remove service warning

* fix(endpoints): check if kube endpoint is local

app/docker/components/imageRegistry/por-image-registry-rate-limits.js

@@ -0,0 +1,18 @@
+import angular from 'angular';
+
+import controller from './por-image-registry-rate-limits.controller';
+
+angular.module('portainer.docker').component('porImageRegistryRateLimits', {
+  bindings: {
+    endpoint: '<',
+    setValidity: '<',
+    isAdmin: '<',
+    isDockerHubRegistry: '<',
+    isAuthenticated: '<',
+  },
+  controller,
+  transclude: {
+    rateLimitExceeded: '?porImageRegistryRateLimitExceeded',
+  },
+  templateUrl: './por-image-registry-rate-limits.html',
+});