Merge forwardport of #11199 to 2.3-develop branch

Applied pull request patch https://github.com/magento/magento2/pull/11199.patch (created by @osrecio) based on commit(s):
  1. 41410ac

Fixed GitHub Issues in 2.3-develop branch:
  - #11176: Configured table prefix is not recognized in CLI admin:user:create (reported by @crtl)

setup/src/Magento/Setup/Model/Installer.php

@@ -1010,6 +1010,7 @@ private function installOrderIncrementPrefix($orderIncrementPrefix)
     public function installAdminUser($data)
     {
         $this->assertDbConfigExists();
+        $data += ['db-prefix' => $this->deploymentConfig->get(ConfigOptionsListConstants::CONFIG_PATH_DB_PREFIX)];
         $setup = $this->setupFactory->create($this->context->getResources());
         $adminAccount = $this->adminAccountFactory->create($setup->getConnection(), (array)$data);
         $adminAccount->save();