v2.2.11 - U18 support

Changes

• Upgraded to RCON V2
• Added U17 map names (@kamilkamilc)
• Added U18 map names and weapons

Update guide for self-hosters

git fetch --all --tags
git stash
git checkout v2.2.11
git stash apply
pip install -r requirements.txt

Now close and reopen the bot.py file.