Properly freeze our python dependencies with pipenv
Duplicate issue: #915
Partially solves: #294 (pip requirements should get added to lock automatically)

• install pipenv in deployment scripts. (0d) - @VakarisZ
• Investigate requirement files in envs/monkey_zoo/blackbox. (0d) - @mssalvatore
• Alter build scripts to use pipenv and test (maybe we need to use --system for compatibility with pyinstaller or pipenv shell):
  • Windows agents (0d) - @VakarisZ
  • Linux agents (0d) - @VakarisZ
  • MSI installer (0d) - @VakarisZ
  • Docker (test and investigate infection_monkey/docker, potentially remove) (0) - @mssalvatore
• AppImage (change to pipenv and test) (0d) - @mssalvatore, @shreyamalviya
• Modify and test the run scripts (run.sh and monkey/monkey_island/windows/run_cc.bat) (0d) - @mssalvatore
• Change monkey/infection_monkey/readme.md and monkey/monkey_island/readme.md and other related documentation to document how we use pipenv (0d) - @mssalvatore
• Resolve telemetry API import error (0d) - @VakarisZ
• Run blackbox tests and resolve new bugs (.5d)
  • Agents - @VakarisZ
  • MSI installer
  • Docker installer