improve integration test to resue models/fixtures and store git repos with tests (#1627)

* improve integration test to resue models/fixtures and store git repos with source

* use gitea-integration-meta dir instead .tar.gz and cleanup every before every test

* fix import package name

.gitignore

@@ -36,6 +36,7 @@ coverage.out
 *.log
 
 /gitea
+/integrations.test
 
 /bin
 /dist
@@ -44,4 +45,4 @@ coverage.out
 /indexers
 /log
 /public/img/avatar
-/integrations/gitea-integration*
+/integrations/gitea-integration