OS tools refactor:

- make udev, runlevel, memory and wget separate files
- rename os_utils to os_tools and move it to test_tools
- remove ModuleRemoveMethod and set modprobe as default
- fix regex in is_kernel_module_loaded method
- remove get_sys_block_path
- move get_block_device_names method to disk tools

Signed-off-by: Katarzyna Treder <katarzyna.treder@h-partners.com>

test_tools/fio/fio.py

@@ -10,9 +10,9 @@ import uuid
 from packaging.version import Version
 import test_tools.fio.fio_param
 import test_tools.fs_utils
+import test_tools.wget
 from core.test_run import TestRun
 from test_tools import fs_utils
-from test_utils import os_utils
 from connection.utils.output import CmdException
 
 
@@ -50,7 +50,7 @@ class Fio:
 
     def install(self):
         fio_url = f"http://brick.kernel.dk/snaps/fio-{self.min_fio_version}.tar.bz2"
-        fio_package = os_utils.download_file(fio_url)
+        fio_package = test_tools.wget.download_file(fio_url)
         fs_utils.uncompress_archive(fio_package)
         TestRun.executor.run_expect_success(
             f"cd {fio_package.parent_dir}/fio-{self.min_fio_version}"