fix: pdb template

[moore-nathan]

⚙️ Issue
Fixes the issue of the pod disruption budget defining both minAvailable and maxUnavailable.

Ticket/s:

⚙️ Change

Change Type: Fix

AC:

✅ Fix

Updated the pdb template to account for if both options are set go with the maxUnavailable field. By default just the minAvailable field is set (which is being done by commenting out the maxUnavailable field in values.yaml), and can still be updated via values.

❓ Tests

Added new file pdb_test.yaml for testing out the rendered pdb resource

• Tests for new feature and update for changes
• Linting passes and/or formatting matches the standard of the repo

🗒️ Documentation

• Updated related documentation (if applicable).
• Updated Change log (if exists)