Grant execute privilege (pterodactyl#655)

closes pterodactyl#654

Author: TrixterTheTux

app/Repositories/Eloquent/DatabaseRepository.php

@@ -93,7 +93,7 @@ public function assignUserToDatabase($database, $username, $remote, $connection
     {
         return $this->runStatement(
             sprintf(
-                'GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX ON `%s`.* TO `%s`@`%s`',
+                'GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX, EXECUTE ON `%s`.* TO `%s`@`%s`',
                 $database,
                 $username,
                 $remote

tests/Unit/Repositories/Eloquent/DatabaseRepositoryTest.php

@@ -117,7 +117,7 @@ public function testCreateUserStatement()
      */
     public function testUserAssignmentToDatabaseStatement()
     {
-        $query = sprintf('GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX ON `%s`.* TO `%s`@`%s`', 'test_database', 'test', '%');
+        $query = sprintf('GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX, EXECUTE ON `%s`.* TO `%s`@`%s`', 'test_database', 'test', '%');
         $this->repository->shouldReceive('runStatement')->with($query, 'test')->once()->andReturn(true);
 
         $this->assertTrue($this->repository->assignUserToDatabase('test_database', 'test', '%', 'test'));