Add helm-unittest tests for IPv6 and dual-stack Service configuration:
- Default behavior (no ipFamilyPolicy/ipFamilies set)
- SingleStack, PreferDualStack, RequireDualStack policies
- IPv4 only, IPv6 only configurations
- Dual-stack with IPv4 primary and IPv6 primary
- Combined policy and families configurations
Add NOTES.txt with IPv6/dual-stack information:
- Display configured IP family policy
- Show IP families list
- Warning when IPv6 is primary (probe compatibility note)
- Warning when IPv6 used without policy
Tests ensure IPv6 and dual-stack work correctly for all scenarios.
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>
