Moving diagnostics into a service (#14832)

* Moving diagnostics into a service

* Fixing golint checks

* Fixing tests

* Renaming from diagnostics to telemetry

* Adding missing files

* Initializing telemetry earlier in the server startup

* Fixing tests

* Adding a log for the telemetryID initialization error

* Addressing PR review comments

* Fixing merge problem

* Removing some extra Diagnostics mentions

* Making tests pass

migrations/helper_test.go

@@ -263,7 +263,7 @@ func (me *TestHelper) ResetRoleMigration() {
 
 	mainHelper.GetClusterInterface().SendClearRoleCacheMessage()
 
-	if _, err := sqlSupplier.GetMaster().Exec("DELETE from Systems where Name = :Name", map[string]interface{}{"Name": app.ADVANCED_PERMISSIONS_MIGRATION_KEY}); err != nil {
+	if _, err := sqlSupplier.GetMaster().Exec("DELETE from Systems where Name = :Name", map[string]interface{}{"Name": model.ADVANCED_PERMISSIONS_MIGRATION_KEY}); err != nil {
 		panic(err)
 	}
 }