Feature/command delay jitter

[thorinaboenke]

Task

#240

Description

schemas/config.py: Added three fields to CommandConfig with safe defaults so all existing playbooks are unaffected:

command_delay_jitter: bool = False
command_delay_jitter_min: float = 0.5
command_delay_jitter_max: float = 2.0

attackmate.py: Refactored the delay logic in _run_commands to compute per-command delay inside the loop. When jitter is off the behavior is identical to before. When on, it computes delay per command. The log message is now per-command (showing the actual delay used)

added unit tests to test/units/test_commanddelay.py

How Has This Been Tested?

new tests in
test/units/test_commanddelay.py

manual testing:
playbook:

commands:
  - type: shell
    cmd: whoami

  - type: shell
    cmd: whoami

  - type: shell
    cmd: whoami

  - type: shell
    cmd: whoami

  - type: shell
    cmd: whoami

config:

cmd_config:
  command_delay: 3
  command_delay_jitter: true
  command_delay_jitter_min: 0.5
  command_delay_jitter_max: 2.0

output:

config (testing min 0)

cmd_config:
  command_delay: 3
  command_delay_jitter: true
  command_delay_jitter_min: 0.5
  command_delay_jitter_max: 7

config (testing jitter false)

cmd_config:
  command_delay: 3
  command_delay_jitter: false
  command_delay_jitter_min: 0.5
  command_delay_jitter_max: 7

Checklist

• This Pull-Request goes to the development branch.
• I have successfully run prek locally.
• I have added tests to cover my changes.
• I have linked the issue-id to the task-description.
• I have performed a self-review of my own code.