Replace prepare_container*** fixtures with a function.

The change is motivated by variety of standard ACLs that will be hard to manage with set of fixtures.

Remove logic that initializes wallet from remote devenv host.
This setup action should be handled outside tests.

Add ability to establish SSH connection using SSH key instead of password.

Signed-off-by: Vladimir Domnich <v.domnich@yadro.com>

robot/resources/lib/python_keywords/cli_helpers.py

@@ -1,16 +1,15 @@
-#!/usr/bin/python3.8
+#!/usr/bin/python3.9
 
 """
-Helper functions to use with `neofs-cli`, `neo-go`
-and other CLIs.
+Helper functions to use with `neofs-cli`, `neo-go` and other CLIs.
 """
-from typing import Union
+import json
 import subprocess
 import sys
 from contextlib import suppress
 from datetime import datetime
-from json import dumps
 from textwrap import shorten
+from typing import Union
 
 import allure
 import pexpect
@@ -19,21 +18,21 @@ from robot.api import logger
 ROBOT_AUTO_KEYWORDS = False
 
 
-def _cmd_run(cmd, timeout=30):
+def _cmd_run(cmd: str, timeout: int = 30) -> str:
     """
     Runs given shell command <cmd>, in case of success returns its stdout,
     in case of failure returns error message.
     """
     try:
         logger.info(f"Executing command: {cmd}")
-        start_time = datetime.now()
+        start_time = datetime.utcnow()
         compl_proc = subprocess.run(cmd, check=True, universal_newlines=True,
                                     stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
                                     timeout=timeout,
                                     shell=True)
         output = compl_proc.stdout
         return_code = compl_proc.returncode
-        end_time = datetime.now()
+        end_time = datetime.utcnow()
         logger.info(f"Output: {output}")
         _attach_allure_log(cmd, output, return_code, start_time, end_time)
 
@@ -50,7 +49,7 @@ def _cmd_run(cmd, timeout=30):
         raise
 
 
-def _run_with_passwd(cmd):
+def _run_with_passwd(cmd: str) -> str:
     child = pexpect.spawn(cmd)
     child.delaybeforesend = 1
     child.expect(".*")
@@ -64,7 +63,7 @@ def _run_with_passwd(cmd):
     return cmd.decode()
 
 
-def _configure_aws_cli(cmd, key_id, access_key, out_format='json'):
+def _configure_aws_cli(cmd: str, key_id: str, access_key: str, out_format: str = "json") -> str:
     child = pexpect.spawn(cmd)
     child.delaybeforesend = 1
 
@@ -87,7 +86,8 @@ def _configure_aws_cli(cmd, key_id, access_key, out_format='json'):
     return cmd.decode()
 
 
-def _attach_allure_log(cmd: str, output: str, return_code: int, start_time: datetime, end_time: datetime):
+def _attach_allure_log(cmd: str, output: str, return_code: int, start_time: datetime,
+                       end_time: datetime) -> None:
     if 'allure' in sys.modules:
         command_attachment = (
             f"COMMAND: '{cmd}'\n"
@@ -99,11 +99,11 @@ def _attach_allure_log(cmd: str, output: str, return_code: int, start_time: date
             allure.attach(command_attachment, 'Command execution', allure.attachment_type.TEXT)
 
 
-def log_command_execution(cmd: str, output: Union[str, dict]):
+def log_command_execution(cmd: str, output: Union[str, dict]) -> None:
     logger.info(f'{cmd}: {output}')
     if 'allure' in sys.modules:
         with suppress(Exception):
-            json_output = dumps(output, indent=4, sort_keys=True)
+            json_output = json.dumps(output, indent=4, sort_keys=True)
             output = json_output
         command_attachment = (
             f"COMMAND: '{cmd}'\n"