Removing all FakeApp usages (#14174)

* Removing some other fake apps

* More FakeApp removed

* Removing entirely FakeApp

* Fixing some tests

* Fixing get Cluster id from get plugin status

* Fixing failing tests

* Fixing tests

* Fixing test initialization for web

* Fixing InitServer for server tests

* Fixing InitServer for server tests

* Reverting go.sum and go.mod

* Removing unneded HTMLTemplates function in App layer

* Moving back some functions to its old place to easy the review

* Moving back some functions to its old place to easy the review

* Using the last struct2interface version

* Generating store layers

* Fixing merge problems

* Addressing PR comments

* Small fix

* Fixing app tests build

* Fixing tests

* fixing tests

* Fix tests

* Fixing tests

* Fixing tests

* Fixing tests

* Moving license to server struct

* Adding some fixes to the test compilation

* Fixing cluster and some jobs initialization

* Fixing some license tests compilation problems

* Fixing recursive cache invalidation

* Regenerating app layers

* Fix test compilation

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

api4/cors_test.go

@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v5/store/storetest/mocks"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -125,6 +126,12 @@ func TestCORSRequestHandling(t *testing.T) {
 				*cfg.ServiceSettings.CorsAllowCredentials = testcase.CorsAllowCredentials
 			})
 			defer th.TearDown()
+			systemStore := mocks.SystemStore{}
+			systemStore.On("Get").Return(make(model.StringMap), nil)
+			licenseStore := mocks.LicenseStore{}
+			licenseStore.On("Get", "").Return(&model.LicenseRecord{}, nil)
+			th.App.Srv().Store.(*mocks.Store).On("System").Return(&systemStore)
+			th.App.Srv().Store.(*mocks.Store).On("License").Return(&licenseStore)
 
 			port := th.App.Srv().ListenAddr.Port
 			host := fmt.Sprintf("http://localhost:%v", port)