Switch to Postgres when running tests and turn off the fsync setting (#13678)

* Run all tests fasts in postgres

* Moving postgres config to a file

* Addressing PR review comments

* Testing against mysql in the CI to keep things less changed

* Revert "Testing against mysql in the CI to keep things less changed"

This reverts commit fc940c111db269a821c54e005d76df87cb70e031.

* Fixing a test broken in postgres but working in mysql

* Fixing some tests

* Fixing some config tests with postgres

* Fixing the rest of config tests

* Fixing govet error

* Fixing search tests for postgres

config/store_test.go

@@ -4,7 +4,6 @@
 package config_test
 
 import (
-	"fmt"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -26,13 +25,13 @@ func TestNewStore(t *testing.T) {
 	require.NoError(t, os.Mkdir(filepath.Join(tempDir, "config"), 0700))
 
 	t.Run("database dsn", func(t *testing.T) {
-		ds, err := config.NewStore(fmt.Sprintf("%s://%s", *sqlSettings.DriverName, *sqlSettings.DataSource), false)
+		ds, err := config.NewStore(getDsn(*sqlSettings.DriverName, *sqlSettings.DataSource), false)
 		require.NoError(t, err)
 		ds.Close()
 	})
 
 	t.Run("database dsn, watch ignored", func(t *testing.T) {
-		ds, err := config.NewStore(fmt.Sprintf("%s://%s", *sqlSettings.DriverName, *sqlSettings.DataSource), true)
+		ds, err := config.NewStore(getDsn(*sqlSettings.DriverName, *sqlSettings.DataSource), true)
 		require.NoError(t, err)
 		ds.Close()
 	})