ipadnsrecord: Allow setting any IP address if create_reverse is false

[rjeffman]

Adding an A/AAAA record to a host fails if there's not a reverse zone set that the resulting PTR record can be added to, even if create_reverse is false.

Changing the rule to create the reverse record fixes the issue.

Fixes: #1381

Summary by Sourcery

Allow adding A/AAAA records without requiring a reverse zone when create_reverse is false and fix reverse record handling.

Bug Fixes:

• Resolve failure adding A/AAAA record if no reverse zone exists when create_reverse is set to false.

Enhancements:

• Only generate and clean up reverse PTR commands when the create_reverse flag is truthy and always remove the extra_create_reverse argument.

Tests:

• Add tests to verify adding an A record without PTR record in an unmanaged subnet is both successful and idempotent.
• Update DNS test environment to include an alternate IPv4 address and remove unused IPv6 reverse zone variables.

[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

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[rjeffman]

Test failure is due to broken FreeIPA deployment on Fedora Rawhide.