Use tmpfs containers for api/api4 tests, move and speed up CLI tests (#7606)

* use tmpfs containers for api/api4, move and speed up cli tests

* minor optimizations

* add missing files, fix pre-existing race condition

* add . to TestMain check

* add requested log message

store/sqlstore/store_test.go

@@ -4,7 +4,6 @@
 package sqlstore
 
 import (
-	"flag"
 	"os"
 	"sync"
 	"testing"
@@ -99,8 +98,6 @@ func tearDownStores() {
 }
 
 func TestMain(m *testing.M) {
-	flag.Parse()
-
 	utils.TranslationsPreInit()
 	utils.LoadConfig("config.json")
 	utils.InitTranslations(utils.Cfg.LocalizationSettings)