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/system.go

@@ -108,7 +108,7 @@ func getSystemPing(c *Context, w http.ResponseWriter, r *http.Request) {
 
 		filestoreStatusKey := "filestore_status"
 		s[filestoreStatusKey] = model.STATUS_OK
-		license := c.App.License()
+		license := c.App.Srv().License()
 		backend, appErr := filesstore.NewFileBackend(&c.App.Config().FileSettings, license != nil && *license.Features.Compliance)
 		if appErr == nil {
 			appErr = backend.TestConnection()
@@ -240,7 +240,7 @@ func invalidateCaches(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	err := c.App.InvalidateAllCaches()
+	err := c.App.Srv().InvalidateAllCaches()
 	if err != nil {
 		c.Err = err
 		return
@@ -379,7 +379,7 @@ func testS3(c *Context, w http.ResponseWriter, r *http.Request) {
 		cfg.FileSettings.AmazonS3SecretAccessKey = c.App.Config().FileSettings.AmazonS3SecretAccessKey
 	}
 
-	license := c.App.License()
+	license := c.App.Srv().License()
 	backend, appErr := filesstore.NewFileBackend(&cfg.FileSettings, license != nil && *license.Features.Compliance)
 	if appErr == nil {
 		appErr = backend.TestConnection()