Alerting: Update grafana/alerting (#88363)

* Alerting: Update grafana/alerting

* make tests pass by implementing yaml unmarshallers and deleting fields with omitempty in their yaml tags

* go mod tidy

* fix tests by implementing not calling GettableApiAlertingConfig.UnmarshalYAML from GettableApiAlertingConfig.UnmarshalJSON

* cleanup, reduce diff

* fix more tests

* update grafana/alerting to latest commit, delete global section from configs in tests

* bring back YAML unmarshaller for GettableApiAlertingConfig

* update alerting package dependency to point to main

* skip test for sns notifier

pkg/tests/api/alerting/api_alertmanager_configuration_test.go

@@ -326,7 +326,6 @@ func TestIntegrationAlertmanagerConfigurationIsTransactional(t *testing.T) {
 		"route": {
 			"receiver": "slack.receiver"
 		},
-		"templates": null,
 		"receivers": [{
 			"name": "slack.receiver",
 			"grafana_managed_receiver_configs": [{
@@ -420,7 +419,6 @@ func TestIntegrationAlertmanagerConfigurationPersistSecrets(t *testing.T) {
 		"route": {
 			"receiver": "slack.receiver"
 		},
-		"templates": null,
 		"receivers": [{
 			"name": "slack.receiver",
 			"grafana_managed_receiver_configs": [{
@@ -452,7 +450,6 @@ func TestIntegrationAlertmanagerConfigurationPersistSecrets(t *testing.T) {
 			"route": {
 				"receiver": "slack.receiver"
 			},
-			"templates": null,
 			"receivers": [{
 				"name": "slack.receiver",
 				"grafana_managed_receiver_configs": [{
@@ -500,7 +497,6 @@ func TestIntegrationAlertmanagerConfigurationPersistSecrets(t *testing.T) {
 		"route": {
 			"receiver": "slack.receiver"
 		},
-		"templates": null,
 		"receivers": [{
 			"name": "slack.receiver",
 			"grafana_managed_receiver_configs": [{
@@ -534,7 +530,6 @@ func TestIntegrationAlertmanagerConfigurationPersistSecrets(t *testing.T) {
 		"route": {
 			"receiver": "slack.receiver"
 		},
-		"templates": null,
 		"receivers": [{
 			"name": "slack.receiver",
 			"grafana_managed_receiver_configs": [{

pkg/tests/api/alerting/api_alertmanager_test.go

@@ -151,7 +151,6 @@ func TestIntegrationAMConfigAccess(t *testing.T) {
 			"template_files": null,
 			"alertmanager_config": {
 				"route": %s,
-				"templates": null,
 				"receivers": [{
 					"name": "grafana-default-email",
 					"grafana_managed_receiver_configs": [{
@@ -2058,7 +2057,6 @@ func TestIntegrationAlertmanagerStatus(t *testing.T) {
 	},
 	"config": {
 		"route": %s,
-		"templates": null,
 		"receivers": [{
 			"name": "grafana-default-email",
 			"grafana_managed_receiver_configs": [{
@@ -2068,8 +2066,7 @@ func TestIntegrationAlertmanagerStatus(t *testing.T) {
 				"disableResolveMessage": false,
 				"settings": {
 					"addresses": "\u003cexample@email.com\u003e"
-				},
-				"secureSettings": null
+				}
 			}]
 		}]
 	},

pkg/tests/api/alerting/api_notification_channel_test.go

@@ -2125,7 +2125,6 @@ var expAlertmanagerConfigFromAPI = `
 		}
       ]
     },
-    "templates": null,
     "receivers": [
       {
         "name": "email_recv",

pkg/tests/api/alerting/testing.go

@@ -35,7 +35,6 @@ const defaultAlertmanagerConfigJSON = `
 			"receiver": "grafana-default-email",
 			"group_by": ["grafana_folder", "alertname"]
 		},
-		"templates": null,
 		"receivers": [{
 			"name": "grafana-default-email",
 			"grafana_managed_receiver_configs": [{