fix: migration errors when using an empty mysql database

The migration was removed in 5af692a because it failed when using SQlite

pkg/bastion/dbinit.go

@@ -170,10 +170,9 @@ func DBInit(db *gorm.DB) error {
 		}, {
 			ID: "10",
 			Migrate: func(tx *gorm.DB) error {
-				// This migration doesn't work anymore after upgrading to latest version of Gorm
-				// if err := tx.Migrator().DropIndex(&dbmodels.SSHKey{}, "uix_keys_name"); err != nil {
-				//		return err
-				//	}
+				if err := tx.Migrator().DropIndex(&dbmodels.SSHKey{}, "uix_keys_name"); err != nil {
+					log.Printf("%v\n[WORKAROUND] recreates uix_keys_name: ", err)
+				}
 				return tx.Migrator().CreateIndex(&dbmodels.SSHKey{}, "uix_keys_name")
 			},
 			Rollback: func(tx *gorm.DB) error {

server.go

@@ -85,7 +85,8 @@ func server(c *serverConfig) (err error) {
 	// configure db logging
 
 	db, _ := dbConnect(c, &gorm.Config{
-		Logger: logger.Default.LogMode(logger.Silent),
+		DisableForeignKeyConstraintWhenMigrating: true,
+		Logger:                                   logger.Default.LogMode(logger.Silent),
 	})
 	sqlDB, err := db.DB()